Taking a first cut on the outer surface a 150mm diameter 180 degree dome in acrylic, inner surface already turned. Nanotech 250 UPL, 2000rpm and 45mm/min
Пікірлер: 206
@jimmydean90068 жыл бұрын
Everything is so clean I can't even tell if the acrylic dome is spinning.
@chrishoesel3 жыл бұрын
The spindle runs on air bearings. Super smooth.
@justincouncell76083 жыл бұрын
I thought the video had stopped due to this and the ultra slow feed rate
@diditwork3703 жыл бұрын
There's vacuums sucking up all the dust.
@peachmelba10003 жыл бұрын
If you've ever seen acrylic being roughed out, it's like confetti flying everywhere haha
@absolute___zero2 жыл бұрын
@@chrishoesel the proper spelling is "aighh beaghhings" (local joke)
@drubradley88218 жыл бұрын
WOW!!! This was extremely pleasing to watch... gave me the same pleasure that I get polishing chrome.... nice work!!!
@TheShorts55555 жыл бұрын
Bit late to the party, I know, but we use a virtually identical process to manufacture contact lenses at our company! In fact, the materials we use are water absorbent acrylic derivatives (copolymer diol esters of PMMA and such) that are turned when dry. Fully CNC diamond tooled lathes on both the BCOR and front optic surfaces, they don’t even need polishing except for the BCOR toric surface on some lenses, and the edges for comfort. Quite satisfying to watch if I get a spare minute away from the job :)
@Metalloys8 жыл бұрын
should've set the camera on the other side.
@andrewsimpson54368 жыл бұрын
+A.H. Shukry You need a little bit of mystery :-)
@Peter_Riis_DK4 жыл бұрын
@@andrewsimpson5436 But I don't! 😎
@TheNefastor4 жыл бұрын
I don't think we'd have seen much more. It doesn't look like this process produces chips or anything but dust.
@Peter_Riis_DK4 жыл бұрын
Jean Roch Yeah, well. That's what you can't see because of the camera position. Right?
@TheNefastor4 жыл бұрын
@@Peter_Riis_DK sure but I was speaking from experience.
@alexymetals12859 жыл бұрын
Very nice part and process. I would recommend using a controlled waviness tool (0.1micron over 100 degrees) to avoid "Rainbow effect" or micro scratches.
@andrewsimpson54369 жыл бұрын
Thanks for the comment G, I'm always open to ideas. We use 120degree sweep and Non Controlled as I mentioned, I thought the waviness had no effect on finish, rainbow etc as that is down to the tool sharpness? What sort of components do you do?
@argentosebastian3 жыл бұрын
Can you make this on a mill? Probably not a good idea isn't it?
@peachmelba10003 жыл бұрын
@@argentosebastian It could be done on a milling machine, however I think you would still have to do the final pass on a turning center, given the spindle speed required, and the need for a single point tool. If you had to get really creative, you could use a mill (and provided the workpiece geometry somehow allowed for it) you could mount the acrylic into a tool holder in the spindle, fix the tool in a vice or fixture on the bed, rotate the work in the holder, and use a tool path to follow the arc of the finished radius. The mill would have to be 5 axis capable, however, and it would not be as rugged a setup.
@argentosebastian3 жыл бұрын
@@peachmelba1000 thanks for the advice. I'm thinking my best shot would be to CNC with the mill the best I can and with a fixture mount it on a manual lathe and finish it up with sandpaper. I would like to make a dome for the camera of my ROV kzbin.info/www/bejne/mn66e4Jjd6ilhKc
@peachmelba10003 жыл бұрын
@@argentosebastian No problem. I know some Santillis here in Nova Scotia. Nice people. Also, I used to make acrylic lense covers for sensors used in fiberoptic relays. They were very small, about 12mm in diameter. Any that came off of the turning centers that were hazy we would polish by chucking them in a jeweler's lathe (in a small plastic fixture). The best results came from using a lint free, or silk, cloth with Novus's three part polishing compound system. Check that stuff out.
@arturvelten90398 жыл бұрын
The finishing is just fantastic!
@agstechnicalsupport4 жыл бұрын
Thank you for posting this beautiful video on Diamond Turning of an acrylic dome. As you see in this video, a very smooth, transparent and shiny surface has been obtained on the substrate after the diamond turning operation. That is what diamond turning is for ! This dome is probably used for a low end optical application similar to protective domes on camera systems or as a see-thru dome for some other application. In higher end applications such as aerospace, missiles.....you see other materials such as quartz being used to make such domes. Maybe some folks are wondering whether glass can be machined with a CNC. Apparently, yes it can, but it is trickier than metals and metal alloys and instead of carbide tips used in metal machining, generally diamond tips as in this video are used on lathes and machining centers. Manufacturing precision optics is more demanding than metal parts manufacturing, because optical surfaces must be clean and very smooth. Optical component geometries require high accuracy and small tolerances because when mounted, any small misalignment or tilt can deflect, reflect, refract the light in unwanted directions. Also since optical components are often coated with metal or metal oxides to act as mirror or filter, the surface roughness has to be very low to allow smoothly coated surfaces. Also cleanliness and precautions against contamination are critical and there are many cleaning steps involved. A small mistake or contamination, scratch, chip, defect or else can easily render the final product as scrap and repairing optical components is much more difficult or impossible as compared to metal parts. Especially when optics is made for high power laser applications, any small defect or contamination can cause a local burn at the defect / contamination site and result in downtime of the apparatus in which the optics is mounted. So, to obtain optical grade surfaces, the way to go is Diamond Turning among some other techniques. Please visit our KZbin channel by clicking our logo on the left for other good content on manufacturing techniques and engineering content.
@jeronimomurruni4 жыл бұрын
I love you KZbin algorithm
@atenrok4 жыл бұрын
Yeah... I have no idea why I'm here either 🤷🏻♂️
@andrewsimpson54364 жыл бұрын
I have an algorithm?! :-)
@atenrok4 жыл бұрын
@@andrewsimpson5436 no. An algorithm has you.
@wjcarter38 жыл бұрын
Hey we're looking for a similarly sized optic to be diamond turned. May I ask which company you work for?
@paulpothier1238 жыл бұрын
that's a prity fancy light bulb cover
@priitmolder64758 жыл бұрын
This is most likely a lens for a camera. "Why don't they heat polish or buff it with wheels?" Because those processes are very uneven. Using a diamond lathe with a known end point width and angle. Knowing the feedrates and pressures. That combines to a very predictable distortion, that can also be measured in Ra (or surface levelness).
@MadHatter1234568 жыл бұрын
+priit mölder No, it's a porthole for a submarine.
@andrewsimpson54368 жыл бұрын
+MadHatter123456 my money is on priit being right.
@MegaWhathell8 жыл бұрын
what a fantastic video!!!!!! what i want to ask...would it be possible polishing PMMA with 2 flute/carbide/flat endmill in CNC machine just as you did in that video??
@CharlesBusada4 жыл бұрын
It's right at 1:08 that this gets good. You can see the bit.
@0relaxis04 жыл бұрын
Nice, but could I making the same surface in glass ? if yes, what parameters and cutter? thx
@andrewsimpson54364 жыл бұрын
No, glass needs moulded or ground
@thefattesthagrid9 жыл бұрын
it's so beautiful..
@getitdone625510 жыл бұрын
is the surface quality on the top of the dome good ? (i mean the smaller radius of the doom) Because in lecture we lurn RPM are linked to the many parameters (included the radius), but as you cannot increase the RPM too high with the limit of the machine the dome might look bad on the top ? you have to polish it after using the lathe ? sorry for bad english i'm outside native english ppl
@andrewsimpson543610 жыл бұрын
I'm running at a constant speed and feed over the whole surface and the finish is still good at the centre. I do give it a light polish by hand after turning.
@gomezpiro5 жыл бұрын
“ nice finish 👍🏼
@amerikorean56064 жыл бұрын
How many waves/ how good RMS can you achieve with arcylic material? and what kind of other materials do you guys handle?
@sparkyjshaw7 жыл бұрын
Great video! Was there a finish polish after this cut and if so what method was used?
@andrewsimpson54367 жыл бұрын
Hi Jack, yes it gets a light polish with 0.5 micron diamond paste on formed dollies covered with microfiber cloth.
@DriveSMR2 жыл бұрын
When you can see people in the reflection….amazing
@rextransformation7418 Жыл бұрын
What is that dome for? I doubt just for aesthetic reasons...
@schlaznger80496 жыл бұрын
Now that is a cool video. Thanks
@glenbrumby18 жыл бұрын
Can you please share the manufacturer and part number of this tip tool? We CNC turn many 100s of acrylic lenses each year and then hand polish them. This would be a big help for us knowing the tool you are using so we can give it a try. Thanks.
@philmeiklejohn8 жыл бұрын
KY Diamond is a good vendor, but it has more to do with that lathe they are using than the tool honestly. The lathe shown here programs in .01 nanometers. You should be ok if you try acrylic or other soft materials but be careful with the diamond on a regular lathe if they chatter at all you can chip the diamond pretty quickly. Even though these chips may be extremely small they will dramatically change the surface finish you see here.
@slipstreamvids74222 жыл бұрын
Reminds of parts we made for KLA Tencor
@aserta8 жыл бұрын
That's very impressive. :)
@mechanical19558 жыл бұрын
That is amazing what a finish
@ObsidianParis4 жыл бұрын
Is that played backwards ? :-)
@andrewsimpson54364 жыл бұрын
Another Flat Earther? LOL
@petkopiryankov4 жыл бұрын
It seems so
@andrewsimpson54364 жыл бұрын
@Fester Blats What's your background? Tell me all you know about Diamond turning,, NO wait, I'll tell you what you know. Zip, Nada, Ziltch!
@TFKofBD9 жыл бұрын
Is that a mistmatic cooling system? I am interested in specular finishing but have no experience in it whatsoever. What would you recommend to a college student who has access to CNC equipment who wishes to try something like this?
@TFKofBD9 жыл бұрын
Rota Kravitz hahah, highly unlikely. We just have a Clausing Metosa with a Fanuc control system in there. What usually limits such finishes?
@TFKofBD9 жыл бұрын
Rota Kravitz Some pointers please? like I said, still learning. A few pointers would be great.
@TFKofBD9 жыл бұрын
Rota Kravitz Haha, fair enough. Been reading up on Nanotech Lathes. 6pm Precision!!!! Thats simply amazing to say the least. Time to go back to the drawing board
@andrewsimpson54369 жыл бұрын
As You see and Rota pointed out it very hi spec and the display is in NanoMeters. The controllers and drives have virtually no backlash and even the spindle has to be ballanced to prevent any throw
@nomdeplume4726 Жыл бұрын
Any backlash would be from drag of the bellows and is immeasurable by any practical means.
@jayfelcy8 ай бұрын
Awsome
@somasundaram557310 жыл бұрын
I guess , this tool gives the best finish for machining acrylic material .. Can please tell me the exact name of the tool used here.. So that i can purchase and do the same thing .. Please ....
@andrewsimpson543610 жыл бұрын
Hi, I use a Natural Diamond, non-controlled, with a 0.5 mm radius tip, 0* rake and conical clearance, 12+1/2* front clearance. We use "Contour Fine Tooling" to supply them
@phuturephunk5 жыл бұрын
Jesus, that must be indicated to within a nanometer of true. You can't even see it rotating.
@donaldasayers9 жыл бұрын
Beautiful.
@Voxters8 жыл бұрын
Awesome! Absolute Awesome! RPM? Feed? Bearings or Magnetik or Oil mounted Spindle? Feels like 3000rpm with totaly zero Fibrations.
@bloodaid7 жыл бұрын
Look description.
@brunomarzano98593 жыл бұрын
Apologies if repeated, but is the dome about 2" thick?
@andrewsimpson54363 жыл бұрын
Hi Bruno it's 24mm thick.
@magnusklahr81907 жыл бұрын
Amazing!
@joseluisrosasvazquez1197 жыл бұрын
hi, where is this done? i need something like this, i need to do a prototype…
@horseracingpeters99716 жыл бұрын
jose luis rosas vazquez
@horseracingpeters99716 жыл бұрын
I can do something like that for you
@Racingboom4 жыл бұрын
Does acrylic get hot when it’s being cut?
@hopsta56284 жыл бұрын
Yes
@hopsta56284 жыл бұрын
@Hector Gutierrez the spatter of hot acrylic coming from the high speed cutting disc of a hand held grinder suggests otherwise.
@KazzArie3 жыл бұрын
Is that large going 100krpm?
@kotti88504 жыл бұрын
@ask3lgolf - i would like to use your video in a blogpost. Would that be OK for you?
@andrewsimpson54364 жыл бұрын
That should be fine, what is the blog subject
@kotti88504 жыл бұрын
@@andrewsimpson5436: 4,5 possible ways to produce a plastic optical prototype. Maybe you can send me your business contact details also to: Lars.Nakotte@all-in-optics.de
@andrewsimpson54364 жыл бұрын
@@kotti8850 that's good but we only do internal work.
@sling90708 жыл бұрын
using Sumitomo's diamond I get a similar finish on my Fox Model# W1758 in the garage.....of course I really have to slow the feed down
@andrewsimpson54368 жыл бұрын
That's good to know, do you work to nanometers or microns?
@runcycleskixc7 жыл бұрын
we are looking to diamond turn an acrylic ellipsoidal dome at sub micron precision for a mirror prototype (wanted BK7 initially, but decided to try something simpler first). The dimensions of the 'egg' are about 10-20 mm, and 0.5 micron precision would be sufficient. Is there a keyword to find you on the internet? Otherwise, I am at my runcyclexcski at gmail (the order of letters is slightly different).
@WHOISTRANE5 жыл бұрын
how it works? because of chemical vapor stream from that vinyl tube?
@thugasaurusrex60045 жыл бұрын
WHOISTRANE it's a diamond tip on a lathe lol
@douro205 жыл бұрын
Nope. This machine has an air bearing spindle and hydrostatic ways and is cooled to within 1/1000 degree Celsius. It can achieve surface finishes better than 1 nanometer and has positional accuracy better than 15 nanometers. It is possibly the world's most accurate series-production machine tool.
@Sketch19948 жыл бұрын
Mind = Blown!
@marcin_lukasik8 жыл бұрын
This is mental.
@JoeyC-ss2tl6 жыл бұрын
Marcin Łukasik nope
@thugasaurusrex60045 жыл бұрын
Marcin Łukasik yea seriously. It's insane how clear that came out
@DTOptics10 жыл бұрын
What was the dome used for?
@ask3lgolf10 жыл бұрын
Hi, afraid I can't say too much but it was for an underwater camera
@DTOptics10 жыл бұрын
ask3lgolf Ah cool. I know what ya mean. It is almost odd for me to see such a 'huge' part on the spindle. Most of the parts I work with are between 0.010mm and 4mm. Cool looking dome though.
@ask3lgolf10 жыл бұрын
Yip, I know what you are saying and that what I do is bigger than the norm. That is about 148mm OD with a 72.5 outer rad and 47 inner rad, goes under water to 5KM Done up to 330mm OD but thats about as big as can be done without using riser blocks for the spindle and I don't want to try that!
@DTOptics10 жыл бұрын
Ah yeah. Grab a 350FG then you can just raise the Y axis :p
@imabeapirate10 жыл бұрын
snowglobe
@AspentheGuardian7 жыл бұрын
so satisfying
@Soupie625 жыл бұрын
Can you do this on a mini-lathe?
@delron444 жыл бұрын
outstanding
@InsightVision19 жыл бұрын
I have domes I need to machine to this quality. Who does this process of diamond lathing? what would it cost per dome? we have rough machined and or injection molded domes. But we need this finish. Help me out with ideas guys?
@Teth479 жыл бұрын
InsightVision1 Just polish them after rough milling, 600 grit, 1200 grit, 2000 grit, then Novus 3, and 2 polish, in that order, you should get a optical finish.
@andrewsimpson54369 жыл бұрын
Teth47 What you "milling" them on?
@Teth479 жыл бұрын
Andrew Simpson A... A milling machine? What else does one mill something on?
@andrewsimpson54369 жыл бұрын
Teth47 Obviously a mill but what type and cutter? Only ask as a lathe would be far more suitable surely?
@Teth479 жыл бұрын
Andrew Simpson Absolutely. I posted that comment late at night, terminology got mixed.
@j0ule7 жыл бұрын
Who made this? Looking for a good diamond turner.
@andrewsimpson54367 жыл бұрын
I am the guilty button pusher :-)
@thugasaurusrex60045 жыл бұрын
That's insane
@rahulbindhu4 жыл бұрын
Turning and polishing at the same time
@andrewsimpson54364 жыл бұрын
Just turning.
@Nightspyz14 жыл бұрын
how did it not shatter to a million pieces as soon as that thing touched it
@andrewsimpson54364 жыл бұрын
It's perspex so not very brittle and the bit of the "thing" that hit it as you say is a diamond lapped to be exceedingly sharp.
@Squawk_Box8 жыл бұрын
Why did this get 12 downvotes? What qualification did this demonstrative video fail that left 12 people that upset?
@rodstartube4 жыл бұрын
with all that CNC manufactiring time, it must be an expensive product.
@bringinghomethebananas3 жыл бұрын
Diamonds are for tools!
@ShopperPlug Жыл бұрын
what will this dome be used for?
@ask3lgolf Жыл бұрын
for a camera to view through that is underwater.
@ShopperPlug Жыл бұрын
@@ask3lgolf Wow, I knew it was for a camera of some sort. It blows my mind that it requires ultra precision machine to make such dome (for surface finishing). I always questioned and wondered why those super clear videos of underwater footage of marine fishes are so crystal clear and vibrant inside a dome cover. I originally thought it was made of glass but I have seen plastic as well. Well worth the money if people knew why it costs so much.
@ask3lgolf Жыл бұрын
@@ShopperPlug We have made cameras that go to the Marianus trench, 11,000M but they are mainly for industrial, oil/gas industry and the std product is rated to go to 4500M also exploration so in general footage of the Titanic etc. Glass is also used but Acrylic is a little more predictable and can withstand a small impact better than glass under pressure, so our designers have always said.
@ShopperPlug Жыл бұрын
@@ask3lgolf Wow, truly state of the art engineering for most demanding tasks used in the industry.
@gopalshukla38646 жыл бұрын
nice
@Meph6488 жыл бұрын
2000 RPM steady? You don't CSS?
@andrewsimpson54368 жыл бұрын
+John Doe Yip, fixed revs. That was the advice at Nanotech (long story but the basics are) so as not to alter any forces on the spindle which would carry on to affect the form. I did try some G96 and it threw up a few random colour rings so sticking with 97
@Meph6488 жыл бұрын
Is it an issue with the lathe itself? We can't see very much but the thing doesn't look super strong/steady. I'm used to hard part machining in lathes and turning centers with 30+hp that can take over .200" DOC in steel without even breaking a sweat. We did some acrylic parts on milling machines, nothing like lenses though. I always imagined any lens or dome like that would need some sort of finishing with lapping compounds or something...
@andrewsimpson54368 жыл бұрын
Aye I do steel and Titanium on std cnc lathes but the diamond turning m/c works to 0.000001 of a mm so the torque changes show up on the finish and we balance the spindle to keep things true at that level. We used to polish on lapping machines with 0.5 micron paste but with diamond turning we can take a finished lens straight off the m/c without polishing. A great bit of kit if you need VVVV high precision.
@Meph6488 жыл бұрын
Ahhh, that explains things. Thanks man. You sure about all those decimal places past the mm are correct?
@andrewsimpson54368 жыл бұрын
+John Doe Yip, 1 millionth of a MM, a nano meter, hard to put that back into inches! I'm a CNC turner too but this is just turning on steroids. Need to be temperature controlled as we aim to have the tool within 1-3 microns below centre and centred to the same tolerance but once you get used to the measuring gear it might as well be 10 thou" LOL You get used to it but just have to start thinking about it in VERY small detail to start. And what I'm doing is just the start!
@FtheWord7 жыл бұрын
What type of coolant do you use in DT process for this acrylic dome?
@andrewsimpson54367 жыл бұрын
No coolant or cutting fluid, it's dry with air blowing the cutting away from the tip and extracted away by a vacuum cleaner.
@FtheWord7 жыл бұрын
Interesting! Thanks for the infos. Also for the tools supplier information...Currently I manufacture only ZnSe and Germanium and I want to start DT testing on acrylics (Zeonex, polycarbonate, PMMA etc.). Do you DT also Silicon?
@andrewsimpson54367 жыл бұрын
We use Contour Fine Tools for our tools, Natural diamond, 0.5mm rad, can't remember the other specs but just tell them what you are machining. I'm only doing Cast acrylic/pmma , have tried Polycarb but it's too abrasive, might work with white spirit as a cutting oil. Its better moulded as it sounds Zeonex is. Good luck
@chase_h.014 жыл бұрын
This is why you dont bother getting a lathe without cnc
@thomasstuart68614 жыл бұрын
Not all machine work is production work.
@blade400guy6 жыл бұрын
What feedrate was that finishing at ??!!
@ask3lgolf6 жыл бұрын
That was roughing at 50mm/min, the finishing cut is 20mm/min
@blade400guy6 жыл бұрын
ask3lgolf looks good mate very nice finish .. What was the feed rate per rev??
@ask3lgolf6 жыл бұрын
that would be 0.01mm/rev but we just program at per minute for more control.
@blade400guy6 жыл бұрын
ask3lgolf makes sense no wonder the insane finish .. slowest feed I've used on a job was 0.04mm per rev haha ... if you don't mind me asking what is the part for ??
@ask3lgolf6 жыл бұрын
It's another world from standard machining, the finish is more due to the sharpness of the diamond doing the cutting. It is set up 0 to 2 microns below centre to prevent chipping the tool but you do get your head round it :-) It's a viewing dome for an underwater camera with a head that pand and tilts to point the camera out in the direction required.
@rolandjollivet384 жыл бұрын
It didn't finish the last few mm... not quite a dome
@andrewsimpson54364 жыл бұрын
Last few mm at the beginning or at the end in the centre?
@BrianMDPhD7 жыл бұрын
What IS this magic!?
@magnusklahr81907 жыл бұрын
BrianMDPhD ?
@softwarepole8 жыл бұрын
Why this tool is on the wrong side?
@andrewsimpson54368 жыл бұрын
+drzaca It's the right side for the rotation of the spindle :-) What makes you say the wrong side?
@softwarepole8 жыл бұрын
+Andrew Simpson usualy the tool works on the front side, not on the back of cnc
@andrewsimpson54368 жыл бұрын
+drzaca All CNC lathes I've used the tool is on the back but that aside, on this m/c it works on the front side when it's turning the inside in M4 :-) Working on both sides saves time resetting the tool and fits in with with the WEC measurement plate. The machine is just as happy working both sides of the centre.
@devildog95954 жыл бұрын
How about playing it in reverse so we can really see what happened
@andrewsimpson54364 жыл бұрын
You're so funny and such an original thought LOL
@RevanTK4217 жыл бұрын
Am I the only one that thinks he is playing the video in reverse?
@andrewsimpson54367 жыл бұрын
No, Mr Zassrob said it a year ago, he even claimed to have a DT machine at work and said it couldn't do this. That said he hadn't seen the machine work and he disappeared after that. Funny thing is I've no idea how to get a film to play backwards!
@brocksdaddy0819104 жыл бұрын
I'm new to this video and reverse was my initial thought as well.
@brocksdaddy0819104 жыл бұрын
At 32 seconds you can see material being removed if you look really close but man its tough to tell
@meeher19835 жыл бұрын
Hi I can u make 1 machin for me . How much it will cost..?
@emmanuelfaure7 жыл бұрын
Hi 9gag! :D
@hirmelihoi22877 жыл бұрын
hiya!
@matzoman34018 жыл бұрын
Pure porn. love it.
@atenrok4 жыл бұрын
Acrylic porn 👈
@RogueBro4 жыл бұрын
People with ocd should be shown This as therapy
@Shreyam_io3 жыл бұрын
Fool will say "reversed" Reversed
@jakub03064 жыл бұрын
This Video its playing backwarks
@andrewsimpson54364 жыл бұрын
and why would anyone want to get rid of a clear finish for a grey finish? I could do that with some wet or dry not a $250,000 machine. PS the world is round.
@sliccmang81764 жыл бұрын
Someone please explain to hot the literal fuck this got into my suggested videos? I’m honestly lost asf
@alejandromedina45974 жыл бұрын
This is obviously reversed.
@andrewsimpson54364 жыл бұрын
Out of interest, what is your background and knowledge to lead you to that conclusion?
@dasdingsuper63127 жыл бұрын
That Video was played and uplaoded reverse....
@andrewsimpson54367 жыл бұрын
Show your ignorance somewhere else please.
@dasdingsuper63127 жыл бұрын
Dude stfu. You know iam right.
@andrewsimpson54367 жыл бұрын
And what knowledge and insight do you have on the subject to think it's not running forward?
@dasdingsuper63127 жыл бұрын
Because i work at a Company who does Diamond Turning. In my free time i did the same, in all ways. Went in all situations from Clear to not clear. Even with full RPM. This Video is uploaded reverse.
@andrewsimpson54367 жыл бұрын
Why could you not go from grey to clear? What lathe and what tooling are you using?