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Engineering hacks & tricks
United Kingdom
Приєднався 19 тра 2021
This channel aims to be totally altruistic. There will be no monetisation, self promotion, business promotion or product promotion. No financial gain is received from advertising or sponsors now or in the future.
Design competition winnings all go directly to the guide dogs for the blind charity. Currently $400.
I'll just add content from my true experiences & facts gained over a lifetime in Engineering.
An apprenticeship teaches knowledge and humility, it's a way of life.
I can't imagine what my apprentice instructors would say to selling tips through patreon or other means. This trade was taught in the belief that any knowledge would be shared freely, just like many mentors did for me.
This is the reason for uploading my videos.
If I ever need to claim extra finance from UA-cam to support my business, then I will become clearly unqualified to post any more videos.
If you like the content please share for others to enjoy, no likes or subs necessary.
Design competition winnings all go directly to the guide dogs for the blind charity. Currently $400.
I'll just add content from my true experiences & facts gained over a lifetime in Engineering.
An apprenticeship teaches knowledge and humility, it's a way of life.
I can't imagine what my apprentice instructors would say to selling tips through patreon or other means. This trade was taught in the belief that any knowledge would be shared freely, just like many mentors did for me.
This is the reason for uploading my videos.
If I ever need to claim extra finance from UA-cam to support my business, then I will become clearly unqualified to post any more videos.
If you like the content please share for others to enjoy, no likes or subs necessary.
Single ball mirror burnishing of small areas.
This single ball tool can be programmed to burnish small areas.
Переглядів: 299
Відео
Offset ball burnishing test.
Переглядів 2,9 тис.9 годин тому
Will the 0.05mm offset of the two omnidirectional balls have sufficient overlap to make a difference? Mirror burnishing of small individual areas is now uploaded. ua-cam.com/video/RJFdL0TEhoA/v-deo.html
Drilling 6 holes. Kevin's speed challenge.
Переглядів 48221 день тому
I suggested on Abom79's recent video on machining a bolt hole circle that a Prototrak SM1500 could program, set datums, load & then drill 6 equispaced holes on a PCD in under 10 minutes. Kevin from Mechanical Advantage issued a challenge for me to upload a video showing that it could be done. Could a retired Toolmaker resist the challenge, let's see how I managed at the end. I also countersunk ...
Is this design the tightest clamping slitting saw arbor?
Переглядів 39421 день тому
This unique design clamps the saw nut from the top of the arbor body instead of inside, allowing a much larger clamping screw to be used. The huge torque that can be applied through the12mm A/F socket in the M14 high tensile cap screw, directly relates to the clamping force applied to the saw. No problem with rounded off hex sockets when the saw tightens itself. Precise location and rigidity is...
The original 2 piece simple concept tool for mirror finishes on flat surfaces.
Переглядів 23 тис.Місяць тому
A quick demonstration to show how my free spinning burnishing tool first shown in December 2023 can also produce mirror finishes as well as patterns. This unique small robust tool has just two simple manufactured parts, 2 standard balls & a shoulder screw. Larger models can easily incorporate far more balls for incresed feedrates. The balls are rolled by the steel profiled race when they are gr...
5C collets & bushes for accurately drilling shaft ends.
Переглядів 454Місяць тому
Using 5C collets to hand drill & tap accurate holes in the end of long shafts. By making a couple of easy parts to clamp 5C collets to shafts allows the use of simple bushes to centrally guide drills, taps & reamers parallel to the shaft axis.
Safety flycutter. Simple design. Surprising surface finish compared to a button insert face mill.
Переглядів 5 тис.Місяць тому
I've never been comfortable with the tool protruding from a flycutter body, it becomes invisible when spinning fast. If you do use flycutters try to use the appropriate size to minimise or eliminate any tool protrusion from the body. This 2lb tool has a cutting radius of 45mm and is designed to use the 100 degree corners not often used on CNMG shape inserts. The 75 degree leading edge gives a s...
Dedicated edgefinder tooling + backlash tips.
Переглядів 9302 місяці тому
ISO 40 & R8 dedicated toolholders for antimagnetic edgefinders. Unique edgefinding tips for those without a DRO or DTI eliminating backlash issues even when finding the centre of a round bar. These techniques can find the centre of a bar end in only 3 axis moves or 2 axis moves & even just one axis move!! in under a couple of minutes without protracted calculations!!
Unique double tool for accelerated production of chamfered spacers.
Переглядів 3,5 тис.2 місяці тому
This double sliding box tool allows the mass production of chamfered spacers or washers on a manual centre lathe. The rod can extend far from the chuck as it is guided by a hardened steel bush at the cutting zone. This allows multiple spacers to be made without constantly stopping the machine, opening the chuck then advancing the rod and finally closing the chuck. The X axis is set permanently ...
Unique double clutch speed chuck key gets a test run.
Переглядів 2,4 тис.3 місяці тому
Had a few hundred rollers to machine using my home made gang tools. It was a good time to see how the double clutch key worked and whether it would reduce the common elbow strain. It proved surprisingly comfortable throughout the run, allowing the ideal handle positions for both opening and closing the chuck.
Form shaping any radius without custom tools.
Переглядів 4653 місяці тому
If a custom radius is required, this method quickly cuts accurate forms without special tooling. It is especially useful on long parts.
How to burnish contours using this unique tool.
Переглядів 1,2 тис.3 місяці тому
With the plethora of O/D roller ball burnishing tools appearing on UA-cam it seemed prudent to demonstrate how to burnish radii and faces on a lathe with one tool.
UNIQUE REPEATABLE ADJUSTABLE CHAMFER STOP
Переглядів 9 тис.4 місяці тому
Following on from the precision solid stop milling vise square, this unique 45 degree setting tool makes light work of machining repeatable, accurate & fast chamfers. Having the end stop on the stock prevents the whole unit from slipping along the vise when pressure is applied downwards on the part. This allows holding the part solid & accurately on the blade against the adjustable blade stop w...
How to get a consistent finish with a ball nose end mill.
Переглядів 7474 місяці тому
Milling on an angle with a ball nose cutter eliminates the zero cutting speed at the centre & produces the same finish on both sides of a slot. This technique usually has the head tilted for the same effect.
Is this the ultimate high strength cue case for maximum cue protection?
Переглядів 1834 місяці тому
Unique one piece cue case. Nothing to protrude from any face or edge to catch on vehicles leather upholstery. Reinforced double skin walls provide maximum protection for valuable cues. Bespoke size to suit one piece cue short extension. For 3/4 split cue see - drive.google.com/file/d/1vOxBE1Sib3Dp_FdWEMJO7bxXVIXvbT3I/view?usp=drive_link
How to machine square parts without a square reference.
Переглядів 2,8 тис.5 місяців тому
How to machine square parts without a square reference.
Mill vise precision square upgrade
Переглядів 1,8 тис.5 місяців тому
Mill vise precision square upgrade
The fastest way to cut radii on YouTube?
Переглядів 4,2 тис.6 місяців тому
The fastest way to cut radii on UA-cam?
Automatically adjustable Bridgeport quill handle.
Переглядів 1 тис.6 місяців тому
Automatically adjustable Bridgeport quill handle.
DTI flexible rod extension for tight spaces.
Переглядів 3436 місяців тому
DTI flexible rod extension for tight spaces.
Pressure turning VW Beetle barrels.
Переглядів 2,5 тис.7 місяців тому
Pressure turning VW Beetle barrels.
Unique tool for internal blind keyways in long parts.
Переглядів 5 тис.7 місяців тому
Unique tool for internal blind keyways in long parts.
Shaping and knurling on a cnc mill !!
Переглядів 2,1 тис.7 місяців тому
Shaping and knurling on a cnc mill !!
Nice results👌 Is the 0.5mm ball offset to the left and right axially from each other?
Yes, they are 0.05mm apart along the Z-axis of the lathe.
Do you have a link to the balls?
Bearing boys UK. 9000 chrome ball transfer unit 47775
Interesting results. I missed the video about the single ball tool?
Thanks for watching. Below are links to other burnishing tools on the channel. lathe contour burnishing - ua-cam.com/video/Avgv5uD49rk/v-deo.htmlsi=eR4gMFxJycVfQzpb milling patterns - ua-cam.com/video/X_St-JSrBQw/v-deo.htmlsi=WFy-efIz3AasehHp lathe patterns - ua-cam.com/video/srBk8jEbaOE/v-deo.htmlsi=_ccUBAp5UblN0udn lathe diameter - ua-cam.com/video/C8Smu026128/v-deo.htmlsi=z4Dm02Kf61-IxqRj lathe bump tool manufacture - ua-cam.com/video/YJ73vtAV320/v-deo.htmlsi=ClMGHMBuNa1u0N79 double ball lathe diameter - ua-cam.com/video/Ekd-ELYJo6o/v-deo.htmlsi=hPAtT4U1oqTVnQU5 double ball milling patterns - ua-cam.com/video/PZ7XHXsY_no/v-deo.htmlsi=TgcITOdaScWrfpAh double ball milling mirror flat surfaces - ua-cam.com/video/C0LaHOmrxyM/v-deo.htmlsi=pyAr5YKg8lU4Ry21
Would those areas serve as more-precise locating features?
They could, I'm sure there are many applications including cosmetics. I was surprised by how easily the blue workshop paper towel scratched the surface.
To clear up any confusion this is not a clone or copy of the current crop of face burnishing tools. This tool was first released in December 23. This ultra simple 2 piece concept does not rely on any other bearings to allow the burnishing balls to spin. This rigid compact unit only protrudes 13mm from the toolholder face which contributes significantly to its performance. The balls are free to run at their natural speed which is 50% of the spindle speed, they are rolled from their tops not pushed from their sides. 😊
I'm replying to a comment about oils. In explanation regarding which oil to use. "Soluble oils" typically arent used on aluminum for 2 reasons; 1, because aluminum is softer and heat build up isn't a problem which is one of the reasons soluble oils are preferred on steels. 2, the more pressing reason soluble oils aren't used on aluminum is due to the interaction the water has on the aluminum. Aluminum takes on an oxide layer rather quickly. Aluminum does tend to gum up. Normal cutting oils are preferred to solubles to prevent gumming. Normal cutting oils also prevents the aluminum from gaining any sort of oxide layer and aluminum parts are often kept oily until final finishing and or anodizing to prevent any unnecessary cleaning and de-smutting which can alter the final dimensions of the aluminum as well as remove too much aluminum leaving behind elements not removed by the de-smutting process that will negatively affect anodizing and altering the final surface finish which also affects anodizing. That this needs to be explained to someone with your experience is concerning however.
The water miscible coolant I use is Rhenus TU446. Below is the description copied from their website. ' Milling steel today, drilling aluminium tomorrow; Rhenus TU 446 is suitable for manufacturers that deploy varying processes and different materials on a daily basis. The coolant is also suitable for the processing of non-ferrous metals and other materials susceptible to staining. Daniele Kleinmann, head of product management for coolants, says: “With Rhenus TU 446 we’re demonstrating that versatility and high performance really can go hand-in-hand. Users don’t need to compromise on any feature. In addition, as the coolant has a low water hazard classification of class 1, storage and handling are a lot easier. “With no GHS pictograms, SVHC ingredients or formaldehyde depots, Rhenus TU 446 is an optimum alternative to products based on secondary amines,” she continues. “This means there are no restrictions due to legal requirements and the product is simply a safer option.” Suitable for titanium, steel, stainless steel, non-ferrous metals and cast iron, the product’s specific formulation also makes it suited to stain-prone materials such as copper and aluminium. In addition, Rhenus TU 446 minimises the risk of corrosion and discolouration, and has been successfully tested for compatibility with polyurethanes and paints. '
@@machinists-shortcuts Its NOT suitable for the reasons I listed. I run an anodizing shop. We would not touch aluminum that has been machined using this stuff. Typically machine shops as a rule will not use water based lubricants on aluminum. The water is the issue here, not the lubricant.
@@ptsdchannel Thanks for the info. To be fair, I never promoted my use of coolant The whole thing started when some pratt suggested I was using silicone who was blissfully unaware of white soluble oil type coolants. The part was never quoted as being prepared for anodising. However like virtually all machining channels using water base coolants, we regularly send out anodising without any problems or specific demands from all the anodisers we use. There are countless videos using coolant on Aluminum so you and @onsecondthought4174 have plenty of teaching to do, unless it is just me you are targeting.😉
@@machinists-shortcuts Sounds like you're using the services of hacks. It's well known not to use water based lubricants on aluminum. When our shop is talking to a client we ask them specifically what lubricants they are using and why. We ask them to use to the proper cutting oil for the reasons we listed. If the anodizer you're using doesnt have an issue with this than they simply don't care about the end result of the anodizing. If you don't want to understand that then whatever. Do what makes you happy. Its youtube. YT is full of hacks that think they know what they're doing.
That zoom-in should silence the haters. Im subscribing.
Taking shrooms again? You people with the haters deal need therapy. If there was ever one word that needed cancelling more is that word haters. And the people who use it... Get a clue.
Silicone lubricant on aluminum? For real? Hmmm.... I'm guessing you're home taught.
I'm not sure what / where you mean. Thanks for watching.
@@machinists-shortcuts You don't use silicone lubricant on aluminum. Normal oil is supposed to be used.
I was not aware that I had any or used any silicone lubricant.
@@machinists-shortcuts What is that white stuff you are using in the video? ITS SILICONE LUBRICANT!!!!!! You have no clue what you're doing!
It's soluble oil. Rhenus TU 446.
So on the last example how do you get the patterns to line up, the feed rate and revs must be very specific?
Ive seen similar concepts before but heard its rather terrible for your spindle bearings. I’d be curious of the impact of this tool.
I think the spindle bearings can be overloaded if the tool is asked to do too much work. A smaller number of bearings helps reduce upward load.
Deez two balls are free to spin! Seriously though, this is the first time I’ve seen this tool. Thanks for sharing.
I don't know any manufacturer or hobbyist that uses this simple robust principle. Usually the balls are pushed round, this tool allows them to freely roll at their own pace. They are supported above by the profiled track instead of on a point to distribute the load.
Very cool designs! Thanks for sharing!
How much down pressure do you have to apply?
The example in the video was Aluminium with a coarse finish which allowed the peaks to be crushed easily. The burnishing tool was set 0.02mm below the flycutter.
Another good video 👍
Thanks for watching.
Very nice. I couldn't help but notice you didn't explain what you were doing and why.
I also never said anything about under 10 minutes. I asked if it was believed that doing this manually could be done faster than using a probe in the machine.
I was responding to the challenge you posted telling me to replicate Adam's video content.
@@machinists-shortcuts "Ok. Now do a whole video that you present on UA-cam and let’s see how fast you do it.". Present being the key word. To talk through. To explain what you are doing. To educate the audience.
@@MechanicalAdvantage The comment relating to doing it manually & probe was in response to the comment posted by @RicksterX-92fs. I suggested 10 minutes, your challenge was in response to that comment. I'll edit my earlier comment.
@@MechanicalAdvantage Drilling holes is pretty self explanatory. The education came from showing that there are machines out there specifically for the type of job that Adam was attempting, that are far faster than manual or cnc. Watching the whole job completely finished in 5 minutes shows what is happening in job shops everywhere and deserved a mention, especially those considering purchasing a CNC.
Putting your money where your mouth is
Wow! I wonder if more balls lead to a finer result? But that would decrease the force on the invidual balls.
Assuming the extra work does not flex the machine, then all the balls will remain at the same height performing the same as with less balls. So either a finer finish or a faster finish.
@@machinists-shortcuts In a perfect world, sure. But there are limiting factors. They are at the same height, some part of the variable has to change. And that is the load per ball, how much pressure is on the balls and how much is on the workpiece because of that. More balls means less weight per ball for the same amount of spindle downward pressure. So now you have 2 things that change - how much the ball can crush the workpiece as it rolls over it based on per-ball pressure, and how much the spindle/machine flexes. For more balls to have the same amount of work, you'd need twice the spindle pressure so the per-ball pressure (and workpiece ball travel path) sees the same force.. but mills are not infinitely stiff. A machine flexing would make the spindle to workpiece tramming move, which means one side of the tool would be deeper than the trailing side (or alternatively front/back).. Just saying, everything is a spring, and doubling the balls wouldn't automatically mean for all the variables staying the same besides that, that you would get twice the speed or better finish. It could, just the same, do no work what so ever, and that .2mm depth just flex the spindle up .2mm, because the per-ball loading is below the plastic deformation strain of the workpiece. Because that's the key factor - the ball pressure (and hardness) is above the workpiece plastic deformation strain, so that the ball rolling over workpiece deforms the workpiece crushing peaks into the valley, leaving a smoother finish. Same reason why setting it 0.001mm depth of 'cut', would not give you an atomically fine finish regardless of travel/spindle speed, the pressure is below that required to smoosh the workpiece flat.. That being said, great video and I am very pleased you got such good results from it! I haven't watched the other vids in the description but definitely plan to! I bet there could be some sort of 'a-ha!' moment if you start doing math about ball diameter versus depth of crush to work out the angle of impingement (or i guess it would be ratio of exsecant over tangent? i ain't been in school for decades!) per depth of cut. Heh, typing out the word 'exsecant' triggered an unknown ptsd event. College trig marks our souls, it seems! Anyhow, thanks for sharing, it came out great!
@@dogsarebest7107 Thanks for the comments, there are lots of variables that makes setting a bit of trial and error. I'm sure this extremely simple principle can be further refined.
@@machinists-shortcuts It really did come out great! And you're not kidding about how many variables there are! On lathes they normally run 1 large ball for burnishing, i wonder if you could do that for mill also. You'd have 2 choices, either the ball is in line with spindle and the mill drives the ball around, or a single ball mounted to a holder, going into a boring bar holder or flycutter, so the single ball moves around much faster. I think the latter would be a great video and experiment! Single ball like how it's done on a lathe, mounted to a boring bar head, to adjust the diameter of the sweep.. it would be much faster than trying to run a single ball in the spindle. Thanks for the reply, have a good one
@@dogsarebest7107 Check out my other videos on burnishing with a single ball. One for patterns on a steel block in the mill & the other creating patterns on the lathe. The links are in the description. This tool is allows a larger ball to roll in ALL directions as it sits on a bed of smaller balls allowing it to follow conplex shapes. Please let me know what you think.
Interesting design but I wonder how much clamping force is required to reach the same level of security, or positive drive as offered by the use of the key the cutter allows for. TLDR: why no key?
Good point. Generally there are two types of this style of arbor. Traditionally the saw is located on the body and held on with a cap. This style allows for a key as the key is in the body which is directly driven by the spindle. This more contemporary style locates the saw on the cap and the cap in turn locates in the body. Although the cap is solid where the saw locates, a key will still depend on how tight it is clamped as the cap is not directly driven. I hoped to solve this by making it possible to exert a lot of clamping pressure using a large screw with a large hexagon drive.
nice!
In the second example, (the "Slinky-Spring" pattern) was the tool set 0.02mm below surface height as well? The result is an amazingly well defined pattern... I can see silversmiths drooling over it! 😊
The pattern burnishing was at 0.2mm deep on Aluminum.
Would this provide a degree of work hardening in a suitable material? It could be useful on projects that don't warrant the time and complexity of heat treating, or case hardening. Thanks for the video.
I believe so. Cogsdill have a lot of information on their website.
I presume you did it, but I didn't see any gapping when you put the spark plug in.
I watched another video of a similar style but his was less good than he hoped, probably because he used 5 x 12mm balls which reduced the point loading which in turn reduced the plastic deformation . I had thought the better way would be 3 balls of 5 or 6mm diameter.
The balls I used were 7mm diameter. I think you are correct that less quantity of smaller balls should work better.
So hyped to see a new upload from you! Roller burnished dace mill?! Yes please!!!!
Thanks, I do try to post original ideas.
If you run it slow it is great to make oil grouves on surfaces.
How much does that change the thickness of the workpiece? Is there a lateral burr pushed out from the edges?
The burnishing tool was set 0.02mm lower than the flycutter. The initial finish was deliberately coarse which allowed the peaks to be easily crushed. I would assume the thickness reduced by less than 0.02mm.
Nice finish but can I do it on my CNC mill? Is the ball assembly spring loaded? On a CNC mill how is the ball load managed?
The demo was on a CNC mill. This ball assembly is solid but I have tested a single ball unit with belleville washers acting as a spring. On this demo the balls were -0.02mm offset from the coarse diamond finish. If the initial finish is finer, then less offset will probably be required.
@@machinists-shortcuts Thank you for the quick reply. I think I would be more comfortable with the disc spring (Schnorr) washers. This way the applied force would be predictable. For just improving surface finish, do you think a modified full-complement ball thrust bearing work?
I would certainly consider a thrust bearing. More balls will allow a faster feedrate, the demonstration unit was predominantly for pattern burnishing so only had two balls. I would look to spring the whole tool instead of individual balls. There is a link added to the description showing the manufacture of the tool which may help with your design.
@@machinists-shortcuts Thank you!!
Interesting idea. I wonder if you could repurpose a thrust ball bearing for this instead.
A thrust bearing would be ideal. I'm considering a larger unit now the principle has been established and will certainly consider a thrust bearing, no need to reinvent the wheel.
Shiny.
Stunning!
Thank you! Cheers!
You are now crowned the Sultan of surface finishes.
Thank for showing this tool. I will definitely try this out.
Two simple machined pieces, worth having a go. Let me know how you get on.
Nice to see this idea in action.
Glad you like it!
Clever.
When you have 5c collets but no lathe to use them in. Very interesting for diy use.
Brilliant. Been doing similar for years but never thought about using 5C collets!
It's surprising how often jobs come in for drilling into the ends that are too long for the lathe or mill. For larger diameters I can use my 3 jaw chuck with a 5c mount, but any small 3 jaw will work.
Nice tool. It should last. I like your round stock vice jaws. I’m going to use that one.
Here are a couple of short video links links using magnetic rotating rollers with a non marking flat on them. drive.google.com/file/d/1B_tPAOlvVQfDqgTwQBJpDxfW_598oZ9d/view?usp=sharing drive.google.com/file/d/1I7JXrSf_DCAR4xKKN-n6P8z0PAqeTT4w/view?usp=sharing
Dude it works, and it works well. It meets all your design goals. Who cares if the surface finish is a little less, it's using sharp corners on a roughing insert - less than mirror is expected.
To get the best finish with the flycutter I had to run the feed at 75mm/min at 0.1mm depth of cut. The CCGT insert has a 0.8mm corner radius but the 100 degree corners are far sharper. This demonstration hopefully shows that I can get a better finish with the button insert face mill running over 20x the feedrate of the flycutter and could easily take a 4mm depth of cut.
2 things. Its hard to see the cutter. And aluminum? Really? And don't give me this BS that aluminum is fine. I've been in the industry over 40 years. Its not fine.
The toolholder is a stock left handed steel boring bar, I kept it deliberately buried in the body to minimize any protrusions for safety. There is an image just showing the boring bar. The test piece was Aluminum which I thought would be ok for the demonstration, I did not want to make a really long video showing lots of other materials being cut. The body is also Aluminium as it only carries the steel toolholder that holds the insert. The cutting is performed by a polished high shear insert, specifically for machining Aluminium. It has very low cutting forces to transfer to the cutter body.
@@machinists-shortcuts Aluminum for the body is fine for a proof of concept, but if you are going to keep it around I'd remake it in steel. Even with the lower tool pressure you'll still get measurable material deformation with aluminum just from the rotational stress of spinning. And by switching to steel you won't have to worry about galvanic corrosion, not to mention thermal expansion problems and "oops" moments having a higher chance of catastrophe.
@@skwerlz I won't use it again, even this cutter is just too slow to make me any money. The video was intended to demonstrate that I can get far better finishes with button insert face mills far, far quicker. The original idea was to auction it off for charity, but your sales pitch may change that lol. I should get it anodized & I'm sure it will be a nice addition to someones tool collection. If I need a uniform finish I use scotchbrite pads on a random orbital sander - see my video - ua-cam.com/video/HfX3zSDTySE/v-deo.htmlsi=mu2Yq1PJw0jj0jEh thanks for the comments.
i have use industry 20 years aluminium made cutting tools. It was many different aluminium alloys, and best alloys are strong like steel
@@juhavuorinen3945 Yes the Aluminium is easily fit for purpose, I've been at this for 50 years when the tools were in black and white.
👍👍😎👍👍
nicely done, great results! thanks for sharing
Thanks
Excelente ,,
I thought that was supposed to be a comparison?
I did a comparison at the end showing the different finishes together.
Beautiful! My flycutter has a 6-inch swing and is hands down my favorite finishing tool. I use a SNMM insert at 45 degrees.
Glad it works for you. I have found button insert face mills better for my applications as shown in the video. A random orbital sander & various grades of scotchbrite offer further satin finish options.
Very interesting. Clever idea. Thanks
Thanks I hope you liked the tips at the end. I can only find one other method for finding the center of the end of a round bar without a DRO or DTI using just an edgefinder. It also needs two indicators to work which sort of defeats the object if you already have an indicator or two..
Yes, this is an educational video. Thanks !
Is this supposed to have sound?
Yes, but I can't get it to work. My phone camera must have been on the wrong setting.
Here is another solution with magnetic rotating rollers with a non marking flat on them. Hope you like the videos. drive.google.com/file/d/1B_tPAOlvVQfDqgTwQBJpDxfW_598oZ9d/view?usp=sharing drive.google.com/file/d/1I7JXrSf_DCAR4xKKN-n6P8z0PAqeTT4w/view?usp=sharing
So basically you turned your lathe into a "poor mans" (figure of speech, no disrespect intended) swiss lathe