I have never seen a broaching tool before. I'm not a machinist, but my Dad had a machine shop that I would help out in the summer time. I'm glad you have these tools, and that you share your time and knowledge with us.
This is terrific, You show how you looked up which cutter to use in the book. Together with Feeds and Speeds this is vital stuff for anyone trying to get a handle on this subject. Being an expert it is so easy to assume we know, we don't. I'm a pilot, I never watch you tube videos on flying 'cause I know that stuff. I watch your videos cause I'm trying to figure this stuff out. Thanks Keith.
Nice work. You taught me something about reinstalling the Woodruff key in my Toro 824 snowthrower. (Impeller bearing replacement necessitated it's removal/reinstall). And, how you cut the slot and keyway using mill and broach. Very awesome. Thank you for making and posting this video. God Bless. tonyd\.
Decided to subscribe because weirdly this isn't the first time Ive come across your videos trying to learn something and actually did in a very informative and basic matter :)
+bcbloc02 Thanks - the shop is coming along. They did not get as much done this past week as the first, but more progress was made. I will get a video posted first of the week showing where we are.
A nice repair Keith, I have built up a set of small "Dumont" broaches & haven't used any yet, so it's nice to see a small 1/8" keyway being done. I also was given a machinery handbook by an engineer at work a few months back whom updated to a newer version & I use it quite a lot. Every machinist should have one in his toolbox ! Be watching your gear repair when you do it too... Cheers - Pedro...
Wow! Thats amazing! Thank you for sharing your wealth of information. This is the first time I have ever viewed anything to do with machinery and it was meditative for me, meaning my attention was completely on the video. I forgot all the craziness in the world for 25 minutes. I would like to learn more for my own information. I live out in the boonies and the closest distance for anything remotely similar for repairs is over an hour one-way. I see how this is a very valuable trade. I appreciate your craft man!
+outsidescrewball I wish I had a bigger arbor press for some of these broaching jobs. My arbor press is just too small. That is something else on my want list.... Thanks!
+David Harris I have shown broaching in some other previous videos as well and I am sure I will continue to show it when I have to do it in the future.
Great and useful video Keith. Amazingly, I was just doing a Woodruff key cut this afternoon and it's always kind of nerve wracking because I've never been properly shown how to do them, until tonight when I came in and tuned in your channel. I don't have a DRO but It has moved quite a bit farther up the list after watching this episode. Thanks again.
Thank you sir , you saved my bacon. Never cut a woodruff key before and to top it off it ended up being a rush job. Your video was very helpful. If I may suggest , could you do a video on tapered shafts? Thank you again.
Congratulations on the ever growing following you have and well deserved it is too. I look forward to your offerings as much as I did years ago when the BBC Aired a show called tomorrows world. Andy from the UK
Great video and instructions. Looking forward to seeing your dividing plate construction project. I want to make another dividing plate but will have to do it without CNC. Thank you
Just one more project to do , move the outer return springs close to the vertical press frame . I think the tension will be displaced more evenly and less twisting of the cross beam . Great Job
+Rick Rose I have featured that vise in several of my videos in the past - even talked about it is a few of them. Don't remember which ones off the top of my head but they are out there.
.........great show, even the little things take time and attention to details..........side note, .....maybe install some flat poly/nylon behind those side slides on your hydraulic press.....the horizontal rail is all over the place...........make it easier to set things up, and less likely to bend tools and parts with out all the slop....Unless a new one is in the works ......lol..........nice work Mr Rucker.
Wow, nice little milestone to hit that 50K! Congratulations! I cannot remember what your count was when I started viewing...I know when it was, and why I even started watching all of you masters of metal and while I won't go into that now on such a happy occasion. Thanks for all your continued efforts and have a great weekend, Aloha...Chuck
Hi Keith, Been watching your video's for the past couple of years and have certainly found them very informative and interesting. My qualifications are in commercial diving and electronics, though I have done a verity of machining. Keep up the good work!
very nice repair to the old lathe! also very detailed course i'd call "dro-101". and here's the source of envy -- your specialty vise! as far as the press, i wish you'd gat a long-travel flange attached hydraulic ram instead that moving frame and a bottle jack. maybe brother adam would be willing to make it for you? thank you, keith, for the video. -toly
Hey, Keith, when zeroing the Y on that woodruff cutter, wouldn't zero be where the cutter just makes a full 1/8" flat on the shaft, and not right where it first touches? Depth is shown in the diagram as measured from the 1/8" wide flat.....
I enjoy all the videos even when the dog gets me up at 5:30! Looking forward to more pics of the shop and the plates coming in so you can cut the teeth. No nap this time; very interesting. Greg
Congrats on your numbers! When you find the time would you put some small wire rope in the springs on the press so if they break the springs wont fly out and hit you in the face. It just happened to a friend of mine and now he may lose the sight in his left eye.
What diameter cutter did you use and what size key? I need to make one in a 9/16” shaft. The width of WK is 3/16” but I’m unsure of the cutter for that, 1/2 or 3/4” dis cutter. Thanks
KeithEven though I know your fingers are a safe distance from the turning cutter, to the unexperienced it will seem that this is an acceptable practise.Maybe in the future you could use a pointer.Enjoy all your videosThanks Bob
Tell us about your band-aid.frame 13:53 ... i have one too...HA! does not matter how long you have been doing this sometimes you want to clear a chip away and forget...I got an end-mill right through my nail for it... Great video again by the way!
1/8 by 1/2 woodruff key. That will be a cutter No 404. Diameter comes first and is the number of 1/8 in diameter. Second portion is width and that is the number of 32' of an inch wide the key is. It is in Machinery's Handbook. For example I had to bye a 606 and it is 5/8 by 3/16. Cheers from John Australia. PS The cutter cost 109 Dollars Aus, I had to do this to do the job. It is a fairly common size keyseat.
Just watched the rest of your video, now I am thinking what my father taught me, put brain into gear before your mouth. LOL. He also said the handbook is the Machinist Bible and I am converted from many moons ago. Cheers from John.
Thanks Keith. Quick question-what are the advantages of a woodruff key over a straight key? I assume the rounded bottom must supply some benefit to justify the added work. Thanks, Ian
+Ian Butler A Woodruff key is not capible of sliding out of the end of the shaft like a square key. If you need to capture the key in place without relying on a setscrew, they are very handy.
Hey Keith, How would you approach lining the second cut up if eyeballing it wouldnt be close enough? I run into that from time to time and just have to keep recutting my peice til it fits. Thanks as always from a learning highschool teacher. -Keith
+yajirobe Not sure I am following your question. The second cut should all be set up from the first since nothing changed. Only how far from the end of the shaft changed and that really did not matter as long as it was in the width of the hub.
(I don't know much about machining, only what I've learned from your channel.) So the broaching, where you were using the press to force that cutting tool through your work piece to cut the slot for the keyway .... Is that effective? It's seems a little barbaric compared to the first process you showed, where you were zeroing out the measurements, carefully monitoring the depth.... Cool video, I like the length and the content.
+Casey Clymore That method of broaching is pretty standard. It does go quicker with a faster press. With the proper shims, you do not even have to measure the depth of cut as it is all worked out with the engineering of the broach and shims to give the proper depth of cut.
hey keith why a woodruff key over a strait key i have often wondered why they make two fifferent keys and why you would choose one over the other,, any idea where i can find the handbook?
+Scott Tyndall The Machinery's Handbook AKA Machinists Bible can easily be found with a google search. Depending on where and who you buy from a hardback version can be kind of salty at upwards of $75 - $100. Have you ever wondered what that big fat drawer is for in the middle of a Kennedy machinists toolbox? It's for that book.
+Scott Tyndall A woodruff key is used in some applications because it is impossible for it to slide out the end without removing the hub first. If you are using a set screw to lock a square key in place, or the part needs to slide on the key over a range, a square key is the way to go. But in many machinery applications a lot a damage could happen if a square key slid out and fell into a crank case. That can't happen with a Woodruff key. Machinerys Handbook can be bought new from the major online book stores or you can buy used copies at places like ebay.
+PrimusImperium this will get you there. www.amazon.com/Machinerys-Handbook-29th-published-Industrial/dp/B00E280QKU/ref=sr_1_7?ie=UTF8&qid=1452848171&sr=8-7&keywords=machinist+handbook
+Keith Rucker - VintageMachinery.org Hi Keith. Do you touch-off with the cutter running because of the irregular shape of the cutter? Is there an accurate way to determine the desired origin without the cutter running?
+Spoif once upon a time, people used to touch off using a cigarette paper (or the foil that was in some packs) and turning the tool by hand, if the machine had a freewheel function. and people dont tend to have a 'fag paper' around these days, plus that lost you a thou or 2 anyway, so you could turn the machine by hand if it allows you to untill you detect it touching.
+jusb1066 That's the way my machine shop instructor taught us to do it. At the time (in the 70s) cigarette papers were abundant...Mic one and subtract the difference...;)
Phil Grindle i reckon the fag paper and its extra thou or two gave you a bit of extra material to take off if you wound it on a bit far, thus saving many a job too! yes, the paper was a trick i was seeing from the 'old boys' although the old boys i knew never wanted to teach you anything, like it was a secret.
+Spoif As others have said, a thin piece of paper is a great way of doing it. But with the tolerance I have, I just touch it off on the part and go with that....
Why not lower the y, and zero off on the other side? That'd be easier than taking the part out of the vise. That way you know the other key slot is very precisely aligned to the other side.
Yikes... Hate to be the one to tell you... You really need to redesign and rebuild that press... It wouldn't be that hard to make modifications to make it a much better (and safer) machine. Frank
+franksalterego I agree. It was basically a copy of a smaller version that I used to have but it has limatations. When I build a new one for my home shop it will have many improvments.
I have never seen a broaching tool before. I'm not a machinist, but my Dad had a machine shop that I would help out in the summer time. I'm glad you have these tools, and that you share your time and knowledge with us.
I have never seen a broaching tool before. I'm not a machinist, but my Dad had a machine shop that I would help out in the summer time. I'm glad you have these tools, and that you share your time and knowledge with us.
+cosprint And I thank you for taking the time to watch!
Thank you Keith on the speeds and depths of cut stuff. Helped me a lot!
+bryan lawless I am trying to remember to talk more about that stuff...
This is terrific, You show how you looked up which cutter to use in the book. Together with Feeds and Speeds this is vital stuff for anyone trying to get a handle on this subject. Being an expert it is so easy to assume we know, we don't. I'm a pilot, I never watch you tube videos on flying 'cause I know that stuff. I watch your videos cause I'm trying to figure this stuff out.
Thanks Keith.
+Clyde Cessna Thanks Clyde. Sometimes it has hard to not take certain things for granted....
The technical quality of your videos just keeps improving.
Keith,
Another satisfied customer! Thanks for sharing.
Have a good one!
Dave
+Swarf Rat Thanks Dave!
Nice work. You taught me something about reinstalling the Woodruff key in my Toro 824 snowthrower. (Impeller bearing replacement necessitated it's removal/reinstall). And, how you cut the slot and keyway using mill and broach. Very awesome. Thank you for making and posting this video. God Bless. tonyd\.
Keith, thank you for making these videos so younger guys like me, who have no one to learn, can access a reference for machining online.
+AndrewCisco My pleasure!
+AndrewCisco My pleasure!
That was a job well done. Those broaches are very handy when you need a keyway. Thanks for the video.
Keith, these (nickel/dime) projects are the best easy to understand and teaches us work arounds, ALWAYS enjoy your projects.
Thanks Mike
+Michael Marks Thanks Mike!
Decided to subscribe because weirdly this isn't the first time Ive come across your videos trying to learn something and actually did in a very informative and basic matter :)
Great work Keith , That sure is what life is about .. Helping out friends in need !! Thumbs up man..
+ShawnMrFixit Thank you!
Congrats on the 50K well deserved! Looking forward to another shop update. I am sure with a crew they are moving right along.
+bcbloc02 Thanks - the shop is coming along. They did not get as much done this past week as the first, but more progress was made. I will get a video posted first of the week showing where we are.
A nice repair Keith, I have built up a set of small "Dumont" broaches & haven't used any yet, so it's nice to see a small 1/8" keyway being done. I also was given a machinery handbook by an engineer at work a few months back whom updated to a newer version & I use it quite a lot. Every machinist should have one in his toolbox ! Be watching your gear repair when you do it too...
Cheers - Pedro...
+Peter Spence Thank you Peter!
Nice job including the DRO and MH book Keith.Kinda puts a name to a face for people learning milling.Congrats on the 50K!
+Mr Frog Thank you for watching and the nice comment!
Wow! Thats amazing! Thank you for sharing your wealth of information. This is the first time I have ever viewed anything to do with machinery and it was meditative for me, meaning my attention was completely on the video. I forgot all the craziness in the world for 25 minutes. I would like to learn more for my own information. I live out in the boonies and the closest distance for anything remotely similar for repairs is over an hour one-way. I see how this is a very valuable trade. I appreciate your craft man!
Enjoyed the video Keith. Congrats on the 50K.
+The Backyard Machine Shop Thanks Mike - I will be putting up a link to your video when I post my next video on the index plates.
Enjoyed watching the repair, think I have a broach to do shortly and can't wait to use my new arbor press😃
+outsidescrewball I wish I had a bigger arbor press for some of these broaching jobs. My arbor press is just too small. That is something else on my want list.... Thanks!
Enjoy all you videos. I would like to see a close up of the broach and more broaching in the future. Thanks!
+David Harris I have shown broaching in some other previous videos as well and I am sure I will continue to show it when I have to do it in the future.
Great and useful video Keith. Amazingly, I was just doing a Woodruff key cut this afternoon and it's always kind of nerve wracking because I've never been properly shown how to do them, until tonight when I came in and tuned in your channel. I don't have a DRO but It has moved quite a bit farther up the list after watching this episode. Thanks again.
+Ed Texley A DRO on a mill is really useful in so many ways. After you use one, you will wonder how you ever did without one!
Thank you sir , you saved my bacon. Never cut a woodruff key before and to top it off it ended up being a rush job. Your video was very helpful. If I may suggest , could you do a video on tapered shafts? Thank you again.
amazing timing, even before you get the new tooling, someone wants a job done using them! lol
+jusb1066 Actually, the job is what is pushing me to get the index plates done....
Congratulations on the ever growing following you have and well deserved it is too. I look forward to your offerings as much as I did years ago when the BBC Aired a show called tomorrows world. Andy from the UK
+Andy Mahoney Thanks so much for watching!
Congratulations on reaching a half century of subscribers Keith. Well deserved. Cheers.
+Rain Coast Thank you sir! Still amazes me so many people watch....
Great video and instructions. Looking forward to seeing your dividing plate construction project. I want to make another dividing plate but will have to do it without CNC. Thank you
+Paul Jones Stayed tuned, I will be showing how to do them manually in an upcoming video....
50k, awesome! Keep your highly educational videos coming. Many Thanks.
Steve.
+stevedotrsa Thanks!
Just one more project to do , move the outer return springs close to the vertical press frame . I think the tension will be displaced more evenly and less twisting of the cross beam . Great Job
+Lawnmowerman02346 yep that mught do it, it needs something to stop it ratcheting and grabbing
+Lawnmowerman02346 it needs some teflon slides.
Nice one Keith. I've never seen a vise with integrated V-blocks like that. Would love to have seen more of it.
+Rick Rose I have featured that vise in several of my videos in the past - even talked about it is a few of them. Don't remember which ones off the top of my head but they are out there.
.........great show, even the little things take time and attention to details..........side note, .....maybe install some flat poly/nylon behind those side slides on your hydraulic press.....the horizontal rail is all over the place...........make it easier to set things up, and less likely to bend tools and parts with out all the slop....Unless a new one is in the works ......lol..........nice work Mr Rucker.
+Rick L The press could use several improvments for sure..
Wow, nice little milestone to hit that 50K! Congratulations! I cannot remember what your count was when I started viewing...I know when it was, and why I even started watching all of you masters of metal and while I won't go into that now on such a happy occasion.
Thanks for all your continued efforts and have a great weekend, Aloha...Chuck
+Knolltop Farms Thank you Chuck. It still amazes me every day that so many people subscribe and watch my channell. Thank you to ALL of them!
Hello Keith,
Always nice to see this kind of work so again an interesting video like always !
Many greetings from Roel.
+RoelTyros As always, Thank You!
Congratulations with 50K of subscribers. Well deserved, Keith.
+cncua Thanks again!
50K subs. congratulations. well deserved.
+pitu72ger Thanks - that and 8 mil views all in the same week!
Cheers keith. Enjoyed this
+Dave Jones Thanks Dave!
Nice Tutorial Keith..enjoyed
+TIM WILSON Thanks!
Hi Keith, Been watching your video's for the past couple of years and have certainly found them very informative and interesting. My qualifications are in commercial diving and electronics, though I have done a verity of machining. Keep up the good work!
+Natalie Gosper Glad to have you tagging along!
very nice repair to the old lathe!
also very detailed course i'd call "dro-101".
and here's the source of envy -- your specialty vise!
as far as the press, i wish you'd gat a long-travel flange attached hydraulic ram instead that moving frame and a bottle jack.
maybe brother adam would be willing to make it for you?
thank you, keith, for the video.
-toly
+Toly Dukhovny I have some plans to upgrade the press down the road. So many projects, so little time....
Hey, Keith, when zeroing the Y on that woodruff cutter, wouldn't zero be where the cutter just makes a full 1/8" flat on the shaft, and not right where it first touches? Depth is shown in the diagram as measured from the 1/8" wide flat.....
Keith my copy of Machinery's is just about the best 80 buck I've ever spent. It's always on my bench or desk.
+John Carlton Agreed!
I enjoy all the videos even when the dog gets me up at 5:30! Looking forward to more pics of the shop and the plates coming in so you can cut the teeth. No nap this time; very interesting. Greg
+Charles Compton Thanks Greg!
Thank you Keith!
Nice demo Keith. Good job. :)
+ChrisB257 Thank you!
Congrats on your numbers! When you find the time would you put some small wire rope in the springs on the press so if they break the springs wont fly out and hit you in the face. It just happened to a friend of mine and now he may lose the sight in his left eye.
great video
nice one Keith.
What diameter cutter did you use and what size key? I need to make one in a 9/16” shaft. The width of WK is 3/16” but I’m unsure of the cutter for that, 1/2 or 3/4” dis cutter.
Thanks
KeithEven though I know your fingers are a safe distance from the turning cutter, to the unexperienced it will seem that this is an acceptable practise.Maybe in the future you could use a pointer.Enjoy all your videosThanks Bob
keith nice work .
+Robert Kutz Thank you!
Tell us about your band-aid.frame 13:53 ... i have one too...HA! does not matter how long you have been doing this sometimes you want to clear a chip away and forget...I got an end-mill right through my nail for it...
Great video again by the way!
That was so long ago, and so many band aids ago, I don't even remember.....
Keith Rucker - VintageMachinery.org HA...yes i know the feeling..
Why do you have the mill running when setting up. Doesn't this risk damaging the part?
bon boulot Keith 👌
Thanks , good job
1/8 by 1/2 woodruff key. That will be a cutter No 404. Diameter comes first and is the number of 1/8 in diameter. Second portion is width and that is the number of 32' of an inch wide the key is. It is in Machinery's Handbook. For example I had to bye a 606 and it is 5/8 by 3/16. Cheers from John Australia. PS The cutter cost 109 Dollars Aus, I had to do this to do the job. It is a fairly common size keyseat.
Just watched the rest of your video, now I am thinking what my father taught me, put brain into gear before your mouth. LOL. He also said the handbook is the Machinist Bible and I am converted from many moons ago. Cheers from John.
Thanks Keith. Quick question-what are the advantages of a woodruff key over a straight key? I assume the rounded bottom must supply some benefit to justify the added work.
Thanks,
Ian
+Ian Butler A Woodruff key is not capible of sliding out of the end of the shaft like a square key. If you need to capture the key in place without relying on a setscrew, they are very handy.
+Keith Rucker - VintageMachinery.org Oh, of course. I never thought of that.
Thanks Keith.
What is the name of this cutter used in woodruff key slot machining?
Please tell.
i always like watching your videos and iva learned a lot
+TekkitPro 99 Thank you!
Hey Keith,
How would you approach lining the second cut up if eyeballing it wouldnt be close enough? I run into that from time to time and just have to keep recutting my peice til it fits.
Thanks as always from a learning highschool teacher.
-Keith
+yajirobe Not sure I am following your question. The second cut should all be set up from the first since nothing changed. Only how far from the end of the shaft changed and that really did not matter as long as it was in the width of the hub.
good job.
+ro eng Thanks!
(I don't know much about machining, only what I've learned from your channel.) So the broaching, where you were using the press to force that cutting tool through your work piece to cut the slot for the keyway .... Is that effective? It's seems a little barbaric compared to the first process you showed, where you were zeroing out the measurements, carefully monitoring the depth.... Cool video, I like the length and the content.
+Casey Clymore That method of broaching is pretty standard. It does go quicker with a faster press. With the proper shims, you do not even have to measure the depth of cut as it is all worked out with the engineering of the broach and shims to give the proper depth of cut.
hey keith why a woodruff key over a strait key i have often wondered why they make two fifferent keys and why you would choose one over the other,, any idea where i can find the handbook?
+Scott Tyndall
The Machinery's Handbook AKA Machinists Bible can easily be found with a google search. Depending on where and who you buy from a hardback version can be kind of salty at upwards of $75 - $100. Have you ever wondered what that big fat drawer is for in the middle of a Kennedy machinists toolbox? It's for that book.
OK thanks will check into getting me one
+Scott Tyndall A woodruff key is used in some applications because it is impossible for it to slide out the end without removing the hub first. If you are using a set screw to lock a square key in place, or the part needs to slide on the key over a range, a square key is the way to go. But in many machinery applications a lot a damage could happen if a square key slid out and fell into a crank case. That can't happen with a Woodruff key.
Machinerys Handbook can be bought new from the major online book stores or you can buy used copies at places like ebay.
Thanks Keith for responding that cleared it all up
You should have had Hector send pictures of it installed
Always interesting videos :-)
Was the depth of cut on the first Woodruff measured from the diameter or from the "shoulders" of the cut?
+RGSneaker Not sure I am following your question. Basically, the depth of cut was from where the cutter first touched the shaft.
Can you provide amazon link to that book please? also good stuff as usual!
+PrimusImperium this will get you there. www.amazon.com/Machinerys-Handbook-29th-published-Industrial/dp/B00E280QKU/ref=sr_1_7?ie=UTF8&qid=1452848171&sr=8-7&keywords=machinist+handbook
+Keith Rucker - VintageMachinery.org Hi Keith. Do you touch-off with the cutter running because of the irregular shape of the cutter? Is there an accurate way to determine the desired origin without the cutter running?
+Spoif once upon a time, people used to touch off using a cigarette paper (or the foil that was in some packs) and turning the tool by hand, if the machine had a freewheel function. and people dont tend to have a 'fag paper' around these days, plus that lost you a thou or 2 anyway, so you could turn the machine by hand if it allows you to untill you detect it touching.
+jusb1066 That's the way my machine shop instructor taught us to do it. At the time (in the 70s) cigarette papers were abundant...Mic one and subtract the difference...;)
Phil Grindle
i reckon the fag paper and its extra thou or two gave you a bit of extra material to take off if you wound it on a bit far, thus saving many a job too! yes, the paper was a trick i was seeing from the 'old boys' although the old boys i knew never wanted to teach you anything, like it was a secret.
+Spoif As others have said, a thin piece of paper is a great way of doing it. But with the tolerance I have, I just touch it off on the part and go with that....
Congratz on 50000 subs you should have way more buddy
+Charlie Wood They will come with time! There was a time I thought I would never get 10,000!
Good video Keith Thanks
+Tom Bellus Thanks Tom!
nice I learned!!
Why not lower the y, and zero off on the other side? That'd be easier than taking the part out of the vise. That way you know the other key slot is very precisely aligned to the other side.
Am I missing something or did you forget to zero your X axis before you moved it in .50"?
On the first cut that is...
+mattbaker333 Not sure, but everything turned out like it was supposed to.....
Yikes... Hate to be the one to tell you... You really need to redesign and rebuild that press... It wouldn't be that hard to make modifications to make it a much better (and safer) machine.
Frank
+franksalterego I agree. It was basically a copy of a smaller version that I used to have but it has limatations. When I build a new one for my home shop it will have many improvments.
not hard when you have the tools and the heart to help
ps send a good address as have a few older big things that I will never use and may fit in with your museum tooling.
Dude, time for a new press---or modify the old one---maybe?
+waltham1957 Yes, it needs some improvements - I will agree....
I forgot to say that your new shop is looking awesome and this will surely up the happy factor I'm sure, good luck in all your endeavors. Paul B.
you still got all your fingers ? here's and old sayin my boss told me..."He does the best damn work I never made a nickel on"..
+jhon greibel Still have all ten!
1:24 1:26 1:27
Loll your broch is not perpenticular your keyway will be not in straight line
I have never seen a broaching tool before. I'm not a machinist, but my Dad had a machine shop that I would help out in the summer time. I'm glad you have these tools, and that you share your time and knowledge with us.