TOT and Billy T who commented below Stefan was using about a 1/2" stroke. I've been looking for a power scraper for a long time it's not going to happen. I've have an old Milwaukee that has a shorter stroke than the newer models,I can control the speed with a router control. I think it would be possible to shorten the stroke and modify the reciprocating end to hold a small blade holder. I wouldn't try to restore a 20" monarch with it, but for doing fixtures I think it could happen. I know whe would be stuck with one length of stroke. Stefan was using very little pressure. Is it possible? 🙂
Very nice. I used to teach precision scraping. Here's what I'm seeing: Good checkerboard, minimum stoning, skip around to randomize the next pass indications, alternating scraping direction, controlled blue thickness, sharp properly radiused scraper, the right number of bearing points per unit area suited for the work, etc. All the elements are there and well integrated. I'm not approving Stephan's work, per se I'm pointing out attributes of good technique for the scraping neophyte. Those looking in who might like to try precision hand scraping as a means of generating precision tooling surfaces can emulate Stephan's technique and the scale of his project - refining a cheap import tilt table - as a first project. Stephan, if it wouldn't interfere with your planning, could I suggest on your next video you fit in a demonstration of your sharpening technique and how you select the scraper radius for each stage of scraping?
I've known about scraping for ages, but never got a sense of how it worked until now. Thank you. It's almost comical to see a Chinese part being finished so well.
.....your shows always contain so much information, they are very well produced with great camera work and clear audio...but the best thing is your educating the viewer, your explanations are in depth and clear...great stuff.......
Hi Stefan, just wanted to say a big thankyou to yourself, if it weren't for you, ThisOldTony, Clickspring, and a few others, I wouldn't be commiting to finally getting into starting a hobby in machining. After years of watching all your videos, I thought it's about time I did what I always wanted to do, and if it weren't for your amazing and superior german accuracy, and step by step approach to your videos, TOTs excellent humour and adaptability, and Clicksprings breathtaking cinematography and quality, I don't think i ever would have had the courage to commit to it. So thank you very much, love all the content, and always ready for more. Cheers from Australia, Sam
Stefan, it is always very satisfying to watch you work. You are patient and exacting in your technique, and to see a crude piece of equipment turn into a beautiful, precision tool is really a pleasure.
You never throw things. You always set them down carefully, but when you were taking apart that angle plate you definitely threw a few pieces down in disdain. Even snapped that angle indicator in half. Haha. Excited for this series. I learn a lot from your videos.
Man, every time I watch your videos I get a new passion along with the ever present dosage of "Shaper Envy", LOL! I actually have always liked the concept of scraping something in, but this showed me that you don't have to reserve it for bringing in two working surfaces and can use the surface plate. That even seems like something I could do, and after years of doing autobody I may even be good at it. Thanks for the great video, Aloha...Chuck
Stefan, Outstanding!!! I never had any lessons on scraping let alone saw anybody do it. I know that it's a true art, you seem to have done it a few times before. Once again thanks and I look forward to your next video when you do the top.
I'm more than a little impressed with the design of your shaper Stefan. I didn't know before this video it was capable of power feeding in the vertical direction simply by swapping a few parts around. There were some very clever people who designed it. Pretty tough to do better than German or Swiss built machine tools in my opinion. And I'm very much looking forward to seeing how you scrape 2 surfaces to a true 90 degree angle. I've got a few guesses about how you'll address those pivot pin holes as well. It may have originated in China but going by your usual standard of craftsmanship I'd be willing to bet your going to end up with the accuracy of a Suburban or other top quality adjustable angle plate by the time your done.
ahh so that's how its done I have watched some other vids on the subject and came away confused as to how they got it flat now I am enlightened thank you very much Stefan you show it so clearly great vids and excellent skill
Great video, thanks for taking the time to film the process. Very informative and relevant. How to take less than perfect tooling and make it more prefect which adds real value to the shop. Thank you Stefan.
Stefan, Your videos are the best! Always informative, edited well and the topics are interesting. I have always wondered how to scrape 90* surfaces so I'm really looking forward to the next installment. Best to you from the east coast of the US.
Hi Stefan - great video as expected--- keep up the great work!!! My wife enjoys hearing your German accent-- when she walks in the room and I'm watching your videos,,,, she says " he's back" Markus
As Keith at Turn Right Machinery said you must consider these tools as kits. You must do the final fit and finish. Looks like a good project. Thanks for taking the time to film it. Al
Stefan, on a gross offender like this one, would it be worth scanning the surface initially for low spots with an indicator so you could see location and how bad they were and perhaps try taking about half the high the height of the high spots off in the first pass? I guess by now you have plenty of experience to see how much iron comes off in a heavy or light pass with the scraper. Or would it be better to use the surface grinder to do this? This Chinese iron warps terribly as it ages, as I have learned from Harbor Freight. Look how far your factory ground surface was out of true! I would expect the pivot bores to be egg-shaped too.
Great basis for a project Stefan. The perfectionist Gotteswinter should make this into a premium item! :) Shaper as previous - super tool to have. Nice to see the power scraper at work. I shall enjoy this :)
Thank you for this, I've done some scraping in the past (just for oil wells and the look) but never to get this quality of flatness and this was a very good explanation of the process that is used.
I can not wait for the next instalment. Very good so far, that power scraper is certainly faster than hand work and looks to be more controllable.Regards, Ted.
Stefan, I was sure as soon as you started to peel off that green paint you were going to find huge voids full of Bondo....! The castings actually look pretty decent... Looking forward to the next video. Cheers, Daniel.
I like the prospect of taking inexpensive tools of modest accuracy and making a good tool from them. I wondered if he checked the alignment of the pivot hole centerline with the base at some point. Perhaps that shows up in a subsequent episode but this would have been a good time to see if there was an issue there that also needed correction. Thanks for posting the video.
+Stefan Gotteswinter Yes, nice. It highlights not only geometry issues but design or process decisions - scrape the base to match the holes or match the holes to the base? Are the hole diameters and/or pins a fixed size or can they be larger or the holes sleeved? Decisions, decisions and followers of your build can learn a lot about what goes into both establishing precision and optimizing the tasks to get there.
Great video, Stefan. I have been doing some scraping, and just bought a Biax power scraper like yours. Old one, works good, has a plug-in inline speed control as well. I also recently bought an old 200x400 cast iron surface plate which will be it's first victim...
There are two ways to lookat "CE" tools. (I know, CE stands for Conformation Europee' or something like that, but I have been corrupted by AvE and CE means "Chinese Export" tools). One is that they are just junk, not fit for human use. The other way (and much more productive) approach is that they are really a kit of parts. They have done the castings for you, which is really the one thing that is difficult to do at home. What you have to do is re-machine the castings. This is a wonderful video because it shows you how to do it. So OK, you don't have a power scraper. Still can do it by hand, merely will take longer, and I have added scraping to my already overloaded project list. And of course you don't have a Gack scraper. Try a mill! Thanks for the post!
+oxtoolco Thank you Tom! Thats how I see most offshore stuff in my shop: A set of castings where the majority of work already has been done. I dont like hogging away tons of material just for roughing out a part if there is a easier way :D Stefan
The import semi finished tooling is always fun. On the markings on the tiop was that +.2mm or .02mm? I think if it was me I would lower the pivots and machine it to positive stop at 90deg so it can quickly double as an angle plate. Don't think I have ever needed to go beyond 90 on a setup, usually just reverse the part or come at it from the other side for an angle like that.
I am sure that this question will mark me as a raw newbie to metal working but is there a why for scrapping the bottom instead of setting the piece up on the mill and milling the bottom flat and in plain with the surfaces you machined on your shapper I thank you for your work and time in teaching us
in the 1970's I worked at Burgmaster In los Angeles, Calif....They made big turret drilling and milling machines....all the ways and tables were hand scraped...all 5-6 of the 'scrapers' were from Germany or Belgium....they had arms like Popeye....!
+DMHLeather It's one thing to scrape something that is flat and single plane, quite another to scrape vee ways I would imagine. Looking forward to him scraping in right angles. I would imagine that to be a challenge as well.
+DSCKy Yep it's much tougher to keep everything properly aligned in 3 dimensions to the tolerances required. So far I haven't attempted it, but the machine tool reconditioning book goes into extensive detail about it.
Great idea and great vid. You did not mention it, but shouldn't the edges be square to the pivot rather than to each other? I am assuming that you plan to bore the pivot to make it square. Could I suggest that you discuss your reasoning for your order of operations? Thanks again.
I bought the same table from RC this week. How I know that's the same? The same excellent paint shop whith the sticky motion rubbing on the paint. So I will try to to scrape it like in the video, but by Hand. Never done this before. Thanks for the videos.
Hi Stefan, could you make a video explaining when scraping a surface is better than milling it? I always wonder why sometimes scraping is preferred to milling a surface flat. What are the differences of scraping and milling? Thanks!
Just wondering, when you put the angle plate on your shaper, how can you be sure that the sides you shape will be straight and perpendicular to the bottom, when you scrape the bottom after you have shaped the top surface ? I mean ...... normally you would flatten the bottom, (handscraper or milling it ?) before you work the top half to be sure that top and bottom are parallel or what ?
Hi mate. Well done. I have always maintained that you buy the raw parts from China, and than form them the way you want them to be. Granted you took it just a bit further than most would do, but I think that you will come away with a very acceptable piece in the end.
Thank you Stefan for all your videos. I really like all of them and learn a lot from each one. They are very educative and you are very precise and clear in the explanations. I think you are really a master of mechanics! I am waiting for the second part of the video but I want to ask you something. After you scraped the bottom surface, how do you ensure that the squareness of this surface with the two "wings" with the bored hole is maintained? Thank you again for sharing you knowledge!
It is hard to find an abundance of info on scraping. I would like to see how to change the out of parallel flatness to another flat. I see scraping but not adjustment to out of level, any instruction on that would be helpful. Keep up the great work, Rob.
STEFAN Thought U Guys all do "HAND SCRAPING" - this machine work was totally new to us. Again, this was one of those - "so that's how it is done" episodes !!! Always wanted to know how scraping really was done now-a-days and this was truly enlightening. Are these Scraping machines available and is this really difficult to master ??? Will check out the proverbial eBay Thanks for sharing and showing how. Great and enjoyable aRM
If you had access to a surface grinder would you use that instead of scraping? If not could you explain. I look forward to seeing the process of scraping for square and parallel. For flatness seems tedious but straight forward. To correct for an actual measured angular deviation is something I really don't understand yet and know you will explain it very well.
+Barry Gerbracht A surface grinder would be a total gamechanger - it would speed up a lot :) Adjusting is not that complicated - you just scrape more on the spot thats thicker and also keep an eye on the flattness of the surface. Its like leveling a foundation for a concrete slab - You look where there is to much earth, you shovel it away and then reflatten the surface.
haven't even watched it yet but this video is awesome.. I've been shopping for an adjustable angle plate... can't tip the head on my new mill. are you spying my browser history?!
+This Old Tony Realy? The head on the Schaublin is fixed? There is another style of angle plate, that is very low profile and runs in a circular doveteil - But scraping that thing to precision sounds like my personal horror show ;) (Nothing wrong with having a spy checking your browser from time to time. Its for safety reasons!)
it swings in xy plane but not yz. schaublin has an adjustable table but I'll turn 90 yrs old before i find one. if you can, show the range of motion with a small vise on it. I'm worried that at, say, 60 deg.. it might swing out of my available Y range.. that is: i could set up a part at 60 but not be able to reach it to make the cut! do you have a link for the low profile one? anyway.. back to your video.. :)
Stefan, thanks for the vid. I just started viewing this angle plate series. Would it not be a good idea to check the orientation of the bore axis relative to your reference surfaces before you get too far into the project? I predict you will end up line boring then adding shim bushings.
tolga onder not an expert, but scraping is better for surfaces that need to move against each other, like a lathe carriage. The scraped surface leaves small reservoirs for oil, so they move better with less wear. On the practical side, I can afford a manual scraping tool, but not a surface grinder.
I do not get your answer metalhead2508 ...Could you please explain what you mean? before the scraped surface it was flat from factory (well, not totally flat, there were a few high spots) Just asking, no critic intended.
I think one of the small hand held recip saws would work nicely in a home shop simply because of the size of the components. one thing. on scraping jobs we always broke the surface up in two directions, 90°s to each other before we even checked to a plate or master. you're going to scrape the whole thing any way
well shazam, a power scraper! I've been looking for one for years. good video. I'm not leaving my chair until part 2 is out so hurry!
+This Old Tony I was thinking the same thing except I forgot to bring a beer...
+This Old Tony wonder if a recip saw could double as a scraper with minor mods///
+Billy T Likely, it's not a complex motion.
TOT and Billy T who commented below Stefan was using about a 1/2" stroke. I've been looking for a power scraper for a long time it's not going to happen. I've have an old Milwaukee that has a shorter stroke than the newer models,I can control the speed with a router control. I think it would be possible to shorten the stroke and modify the reciprocating end to hold a small blade holder. I wouldn't try to restore a 20" monarch with it, but for doing fixtures I think it could happen. I know whe would be stuck with one length of stroke. Stefan was using very little pressure. Is it possible? 🙂
Very nice. I used to teach precision scraping. Here's what I'm seeing:
Good checkerboard, minimum stoning, skip around to randomize the next pass indications, alternating scraping direction, controlled blue thickness, sharp properly radiused scraper, the right number of bearing points per unit area suited for the work, etc. All the elements are there and well integrated.
I'm not approving Stephan's work, per se I'm pointing out attributes of good technique for the scraping neophyte.
Those looking in who might like to try precision hand scraping as a means of generating precision tooling surfaces can emulate Stephan's technique and the scale of his project - refining a cheap import tilt table - as a first project.
Stephan, if it wouldn't interfere with your planning, could I suggest on your next video you fit in a demonstration of your sharpening technique and how you select the scraper radius for each stage of scraping?
I've known about scraping for ages, but never got a sense of how it worked until now. Thank you. It's almost comical to see a Chinese part being finished so well.
.....your shows always contain so much information, they are very well produced with great camera work and clear audio...but the best thing is your educating the viewer, your explanations are in depth and clear...great stuff.......
Hi Stefan, just wanted to say a big thankyou to yourself, if it weren't for you, ThisOldTony, Clickspring, and a few others, I wouldn't be commiting to finally getting into starting a hobby in machining. After years of watching all your videos, I thought it's about time I did what I always wanted to do, and if it weren't for your amazing and superior german accuracy, and step by step approach to your videos, TOTs excellent humour and adaptability, and Clicksprings breathtaking cinematography and quality, I don't think i ever would have had the courage to commit to it. So thank you very much, love all the content, and always ready for more.
Cheers from Australia,
Sam
Stefan this will be a very interesting series for me. Not easy to find good scraping videos. Thanks again
Stefan, it is always very satisfying to watch you work. You are patient and exacting in your technique, and to see a crude piece of equipment turn into a beautiful, precision tool is really a pleasure.
I had never seen how those flat stones were used before....very interesting & informative. Thank you!
You never throw things. You always set them down carefully, but when you were taking apart that angle plate you definitely threw a few pieces down in disdain. Even snapped that angle indicator in half. Haha. Excited for this series. I learn a lot from your videos.
Stefan Gotteswinter A legend in the making.
Thank you for posting that Stefan, I have never seen metal scraping. That was awesome!
Man, every time I watch your videos I get a new passion along with the ever present dosage of "Shaper Envy", LOL! I actually have always liked the concept of scraping something in, but this showed me that you don't have to reserve it for bringing in two working surfaces and can use the surface plate. That even seems like something I could do, and after years of doing autobody I may even be good at it. Thanks for the great video, Aloha...Chuck
Stefan, Outstanding!!! I never had any lessons on scraping let alone saw anybody do it. I know that it's a true art, you seem to have done it a few times before. Once again thanks and I look forward to your next video when you do the top.
I liked the video. How to take a lump of metal and make it a functional working tool.
You always do amazing work.
Have a day
+E Hiebert Thank you!
Good job Stefan. With some elbow grease you will make that a nice table. Looking forward to the next episode. regards from the UK
I'm more than a little impressed with the design of your shaper Stefan. I didn't know before this video it was capable of power feeding in the vertical direction simply by swapping a few parts around. There were some very clever people who designed it. Pretty tough to do better than German or Swiss built machine tools in my opinion.
And I'm very much looking forward to seeing how you scrape 2 surfaces to a true 90 degree angle. I've got a few guesses about how you'll address those pivot pin holes as well. It may have originated in China but going by your usual standard of craftsmanship I'd be willing to bet your going to end up with the accuracy of a Suburban or other top quality adjustable angle plate by the time your done.
Very nice Stefan. Had not watched hand scraping before and learned a lot.Thanks for sharing.
Bob
ahh so that's how its done I have watched some other vids on the subject and came away confused as to how they got it flat now I am enlightened thank you very much Stefan you show it so clearly great vids and excellent skill
Just another great video by you Stefan cannot wait for the next in the series. Love watching a craftsman in action.
Dave
Great video, thanks for taking the time to film the process. Very informative and relevant. How to take less than perfect tooling and make it more prefect which adds real value to the shop. Thank you Stefan.
Stefan, Your videos are the best! Always informative, edited well and the topics are interesting. I have always wondered how to scrape 90* surfaces so I'm really looking forward to the next installment. Best to you from the east coast of the US.
Hi Stefan - great video as expected--- keep up the great work!!!
My wife enjoys hearing your German accent-- when she walks in the room and I'm watching your videos,,,, she says " he's back"
Markus
I am loving your shaper videos. It is like a kinetic sculpture. I am learning a lot too.
Thank You!
Paul
+Paul Devey Its funny, I can watch the shaper over and over, it never gets odd, just as you say, a bit like a kinetic sculpture :)
We should coin a new term. "Gotteswintered". "It's been Gotteswintered, but it took a lot of time and skill." Great video, Stefan!
Nice work Stefan, I really appreciate your attention to detail and patience.
As Keith at Turn Right Machinery said you must consider these tools as kits. You must do the final fit and finish. Looks like a good project. Thanks for taking the time to film it.
Al
Stefan, on a gross offender like this one, would it be worth scanning the surface initially for low spots with an indicator so you could see location and how bad they were and perhaps try taking about half the high the height of the high spots off in the first pass? I guess by now you have plenty of experience to see how much iron comes off in a heavy or light pass with the scraper. Or would it be better to use the surface grinder to do this? This Chinese iron warps terribly as it ages, as I have learned from Harbor Freight. Look how far your factory ground surface was out of true! I would expect the pivot bores to be egg-shaped too.
Great basis for a project Stefan. The perfectionist Gotteswinter should make this into a premium item! :) Shaper as previous - super tool to have. Nice to see the power scraper at work.
I shall enjoy this :)
Great work Stefan... you are getting better and better in the scraping :) nice pattern...
Thank you for this, I've done some scraping in the past (just for oil wells and the look) but never to get this quality of flatness and this was a very good explanation of the process that is used.
I can not wait for the next instalment. Very good so far, that power scraper is certainly faster than hand work and looks to be more controllable.Regards, Ted.
Stefan, I was sure as soon as you started to peel off that green paint you were going to find huge voids full of Bondo....! The castings actually look pretty decent... Looking forward to the next video. Cheers, Daniel.
Enjoyed this video. Thanks for sharing. Waiting for part 2
Great work! Look forward to the next episode.All The Best!
I am looking forward to seeing the silk purse emerge from the sows ear. Treating Chinese tooling as a kit of material is a great idea.
Very interesting... and very tempting. I may have to have a go at scraping myself.
great video, i like the feature on your shaper to allow it to move the table horizontal or vertical
Great vid as always! It's fun to live vicariously and imagine that I'm doing exactly that to some of the junk import "raw castings" I've got.
I like the prospect of taking inexpensive tools of modest accuracy and making a good tool from them.
I wondered if he checked the alignment of the pivot hole centerline with the base at some point. Perhaps that shows up in a subsequent episode but this would have been a good time to see if there was an issue there that also needed correction.
Thanks for posting the video.
+TGTool Yes, I checked it and it was completely off - a few tenth of a mm. I rebored those holes, which will be seen in the next video :)
+Stefan Gotteswinter
Yes, nice. It highlights not only geometry issues but design or process decisions - scrape the base to match the holes or match the holes to the base? Are the hole diameters and/or pins a fixed size or can they be larger or the holes sleeved? Decisions, decisions and followers of your build can learn a lot about what goes into both establishing precision and optimizing the tasks to get there.
Great video, Stefan. I have been doing some scraping, and just bought a Biax power scraper like yours. Old one, works good, has a plug-in inline speed control as well. I also recently bought an old 200x400 cast iron surface plate which will be it's first victim...
+Bill Lewis Yes
Nice video and craftsmanship Stefan. I have done a lot of scraping but I don't have a power scraper. Ok ... I am jealous.
ROBRENZ only took you three years to get one 😀
There are two ways to lookat "CE" tools. (I know, CE stands for Conformation Europee' or something like that, but I have been corrupted by AvE and CE means "Chinese Export" tools). One is that they are just junk, not fit for human use. The other way (and much more productive) approach is that they are really a kit of parts. They have done the castings for you, which is really the one thing that is difficult to do at home. What you have to do is re-machine the castings. This is a wonderful video because it shows you how to do it. So OK, you don't have a power scraper. Still can do it by hand, merely will take longer, and I have added scraping to my already overloaded project list. And of course you don't have a Gack scraper. Try a mill! Thanks for the post!
Hey Stefan,
Good use of some offshore materials. You are so right you can even buy the materials for what they sell this stuff for.
All the best,
Tom
Plus some of the work is already done!
+oxtoolco Thank you Tom! Thats how I see most offshore stuff in my shop: A set of castings where the majority of work already has been done. I dont like hogging away tons of material just for roughing out a part if there is a easier way :D
Stefan
excellent video, can't wait to see the next. thanks for sharing your work.
+Lawrence Lamb Thanks!
I do enjoy learning this skill. Thank you for sharing.
Very nice work, looks beautiful after scrapping.
Who says "you can't polish a turd"? Great video Stefan, looking forward to the next episode.
Interesting project. I have never imagined myself scraping a surface as I am sure ti would wind up looking like moon craters.
Der Mann versteht sein Handwerk - große Klasse!!
Ein tolles Video, danke! Die Gack Stoßmaschine ist echt der Hammer. Hast du sie selbst eingeschabt?
The import semi finished tooling is always fun. On the markings on the tiop was that +.2mm or .02mm? I think if it was me I would lower the pivots and machine it to positive stop at 90deg so it can quickly double as an angle plate. Don't think I have ever needed to go beyond 90 on a setup, usually just reverse the part or come at it from the other side for an angle like that.
+bcbloc02 How about a bolt and lock nut screwed into the edge of the plate as a stop for 90 degrees, easily removed for a larger angle?
*****
Probably would need 2 so you couldn't skew the plate shoving against the bolt.
+bcbloc02 One in the center makes a triangle, which is a stable geometry. For it to work at all requires a reasonably tight fit at the pivots.
I am sure that this question will mark me as a raw newbie to metal working but is there a why for scrapping the bottom instead of setting the piece up on the mill and milling the bottom flat and in plain with the surfaces you machined on your shapper I thank you for your work and time in teaching us
Thank you for sharing the scraping process. I really appreciate it.
in the 1970's I worked at Burgmaster In los Angeles, Calif....They made big turret drilling and milling machines....all the ways and tables were hand scraped...all 5-6 of the 'scrapers' were from Germany or Belgium....they had arms like Popeye....!
Thanks Stefan: I just got my ebay angle plate it is a us no name and rough as a cobb. after seeing yours looking better i will work on mine.
very interesting! hope part 2 will appear soon!
+Jaap Dekker one or two weeks! :)
HiGreat videosBut why use a scapper?Why not use a fly cutter on your milling machine?
Great Video, scraping is very interesting to me! I wish there was more material on the web for reconditioning a milling machine by hand scraping.
+DMHLeather It's one thing to scrape something that is flat and single plane, quite another to scrape vee ways I would imagine. Looking forward to him scraping in right angles. I would imagine that to be a challenge as well.
+DSCKy Yep it's much tougher to keep everything properly aligned in 3 dimensions to the tolerances required. So far I haven't attempted it, but the machine tool reconditioning book goes into extensive detail about it.
Great idea and great vid.
You did not mention it, but shouldn't the edges be square to the pivot rather than to each other?
I am assuming that you plan to bore the pivot to make it square.
Could I suggest that you discuss your reasoning for your order of operations?
Thanks again.
Great work Stefan
I bought the same table from RC this week. How I know that's the same? The same excellent paint shop whith the sticky motion rubbing on the paint. So I will try to to scrape it like in the video, but by Hand. Never done this before. Thanks for the videos.
Hi Stefan, could you make a video explaining when scraping a surface is better than milling it? I always wonder why sometimes scraping is preferred to milling a surface flat. What are the differences of scraping and milling? Thanks!
+Christian Aigner I think I am going to do a Q/A Video on scraping with some background to it, thanks for the idea!
As usual a great video Stefan! keep up the great work! Thanks
you make that look easy stefan.
Just wondering, when you put the angle plate on your shaper, how can you be sure that the sides you shape will be straight and perpendicular to the bottom, when you scrape the bottom after you have shaped the top surface ?
I mean ...... normally you would flatten the bottom, (handscraper or milling it ?) before you work the top half to be sure that top and bottom are parallel or what ?
Hi mate. Well done. I have always maintained that you buy the raw parts from China, and than form them the way you want them to be. Granted you took it just a bit further than most would do, but I think that you will come away with a very acceptable piece in the end.
Thank you Stefan for all your videos. I really like all of them and learn a lot from each one. They are very educative and you are very precise and clear in the explanations. I think you are really a master of mechanics!
I am waiting for the second part of the video but I want to ask you something. After you scraped the bottom surface, how do you ensure that the squareness of this surface with the two "wings" with the bored hole is maintained?
Thank you again for sharing you knowledge!
It is hard to find an abundance of info on scraping. I would like to see how to change the out of parallel flatness to another flat. I see scraping but not adjustment to out of level, any instruction on that would be helpful. Keep up the great work, Rob.
STEFAN
Thought U Guys all do "HAND SCRAPING" - this machine work was totally new to us.
Again, this was one of those - "so that's how it is done" episodes !!!
Always wanted to know how scraping really was done now-a-days and this was truly enlightening.
Are these Scraping machines available and is this really difficult to master ???
Will check out the proverbial eBay
Thanks for sharing and showing how.
Great and enjoyable
aRM
If you had access to a surface grinder would you use that instead of scraping? If not could you explain.
I look forward to seeing the process of scraping for square and parallel. For flatness seems tedious but straight forward. To correct for an actual measured angular deviation is something I really don't understand yet and know you will explain it very well.
+Barry Gerbracht A surface grinder would be a total gamechanger - it would speed up a lot :)
Adjusting is not that complicated - you just scrape more on the spot thats thicker and also keep an eye on the flattness of the surface. Its like leveling a foundation for a concrete slab - You look where there is to much earth, you shovel it away and then reflatten the surface.
very cool and great job Stefan ! 👌👏
love watching the scraping
Enjoy your work. thanks for sharing.
What make is the power scraper? I have just finished hand scraping 3 off 600mm x 600mm surface plates into each other for a customer.
16mm usually fits a 5/8” wrench for the US.
haven't even watched it yet but this video is awesome.. I've been shopping for an adjustable angle plate... can't tip the head on my new mill. are you spying my browser history?!
+This Old Tony Realy? The head on the Schaublin is fixed? There is another style of angle plate, that is very low profile and runs in a circular doveteil - But scraping that thing to precision sounds like my personal horror show ;)
(Nothing wrong with having a spy checking your browser from time to time. Its for safety reasons!)
it swings in xy plane but not yz. schaublin has an adjustable table but I'll turn 90 yrs old before i find one. if you can, show the range of motion with a small vise on it. I'm worried that at, say, 60 deg.. it might swing out of my available Y range.. that is: i could set up a part at 60 but not be able to reach it to make the cut! do you have a link for the low profile one? anyway.. back to your video.. :)
Great job Stefan !!
Very interesting indeed. Thank you for sharing this.
What is the German brand of blue called?
I think I might have set it up on the mill and taken a light cut to make ot more uniform before scraping.
I enjoy your vids
Nice job.
+Randy Richard Thanks Randy!
Great video,I learned alot.What kind of roller did you use to roll out the bluing?
How much does an Renz-Eiro A10 power scraper costs/used to cost? Are they still in business? And the A20 price?
Stefan, thanks for the vid. I just started viewing this angle plate series. Would it not be a good idea to check the orientation of the bore axis relative to your reference surfaces before you get too far into the project? I predict you will end up line boring then adding shim bushings.
what brand is the hi-spot blueing that you use?
Also where did you purchase the angle plate?
Am I missing it or did you true any of the surfaces to the pivot axis. If not, you will have issues as you use it at different angles.
I bored the pivots true to the scraped surfaces :)
great work and skill
very interesting loved the video ty for sharing it
Thanks Stefan, another great video
Very nicely done as always, great job :)
Is that a Biax? It looks a little odd.... Did I miss something in an earlier video?
Jim
Hi,
What is the difference between using surface grinder and scraping ?
tolga onder not an expert, but scraping is better for surfaces that need to move against each other, like a lathe carriage. The scraped surface leaves small reservoirs for oil, so they move better with less wear.
On the practical side, I can afford a manual scraping tool, but not a surface grinder.
Great video as always, also my Girlfriend wanted to tell you she loves your coffee mug at the end
Dave Hetrick
How does it not move when you tighten the nuts?
Ahh, the key.. makes sense
Very interesting to see, thanks for sharing.
Stefan, just a question. Why didnt you just use the shaper for the bottom surface?
I do not get your answer metalhead2508 ...Could you please explain what you mean?
before the scraped surface it was flat from factory (well, not totally flat, there were a few high spots) Just asking, no critic intended.
Stefan, did you shorten the stroke length as you got closer to flat? Any changes to your carbide cutting edge as you got closer to flat?
very interesting , thanks for sharing. more compulsive viewing.
I think one of the small hand held recip saws would work nicely in a home shop simply because of the size of the components. one thing. on scraping jobs we always broke the surface up in two directions, 90°s to each other before we even checked to a plate or master. you're going to scrape the whole thing any way
Well, they seemed to pick the worst possible place to cut the key slots for the pivot pins.