I will now be looking @ knurling to see if it is square or rotary cut. Very subtle. Going to find an example of square cut now to compare the process....

@@patrickhayes3099 Happy to help.

Yes! It reminds me of how artisan cobblers would sometimes make intricate curved patterns in road design.

@@conexant51 Well said.

this method was used by china 50 years ago japan is slow

Yeah that was the part that I was wondering about, too. The setup made sense to me, but I expected the curves to be apparent

Very true, if you did not know that the cross slide was moving along with the bit sweeping across, you would not easily see that the lines are not straight. But armed with that knowledge, you can pick up both motions in the final cut. Still a very interesting process.

During the video was thinking could do on a shaper and have straight lines but the final result looked fine as it was.

If the cutter was rotating in a smaller arc the knurls would be more curved.

The large offset of the cutting tool minimized the curve, but it also cause the chatter we could hear. It was quite apparent on the workpiece after the first direction cuts, and while we could hear the vibration (which was causing the chatter) there was no sign of it when we saw the finished piece. I don't know if he slowed the spindle down and took some spring passes, or polished the piece with a wire wheel perhaps?

I am going to try this on my shaper too.

It more or less turns it into a horizontal mill, which is where this would usually be done, hence the unorthodox fixturing.

​@@jttech44many of the smaller "hobbyist" size lathes (like Craftsman, Logan, and Southbend) have optional accessories to turn the lathe into a mill by mounting a sideways table and vertical screw in place of the tool post. I hear they're not the greatest thing to use, but OK for a hobbyist who might not want to pay for an entire second machine if not used often.

I think it would look very cool, and be symmetrical! Triangles with curves!

As long as there is minimal backlash, and you don't disengage the cross-feed when reversing, it should work just as shown.

Choice of material and insert can make the process faster

slow ? i dont think so 5:50 ? we do cross knurling with our 5axis machine and honestly this method is maybe faster :D

Find a way to mount one of your hammers. This sort of end cut is used on some framing hammers to cut down on bent nails.

Hammers, meat hammers, legs that grip a surface, knobs, screws, all sorts of decorative stuff, can be used against another knurled surface to prevent rotation, etc etc. Usually you do this on a mill, but, can be done on a late like this if you get creative with the fixtures like they did.

А как же фрезерные работы, особенно работы флайкаттером?

Ж

フライス盤のフライカッターみたら失神してそう

@@user-gc6uv9bf9h いや、フライス盤のあれは「そういうもの」として受け入れてしまっているからそれほどでもないなぁ やっぱり経験不足と「主軸の向き」が私に恐怖感を与えているのかと

@@user-gc6uv9bf9h 🤣👍

É só temperar, aí sim 👍

He is cutting it with the cross power feed. Note he doesn't disengage the power feed between cuts. You usually can transpose gears on the back of the head stock to get pretty high feed rates.

I agree, my little 7x14 lathe doesn't have that power cross feed either and so I can't use this procedure as shown. I would have to make each pass full depth and then feed in by hand for the next pass. It can be done, it's just a lot more work. Move to slot 1, cut to depth, pull back, move cross slide in to slot 2, rinse and repeat and repeat and repeat...........

You can do this without a power cross feed, it'll just take *forever* because you can only take one cut at a time. You can take one "row" to finished depth at a time though, which will save some time. Hardest part is grinding the cutter profile honestly, that was a real piece of art.

Thank you for watching. I used the automatic feed of the lathe. This is the fastest feed for the existing gear settings on this lathe. In order to keep the synchronization, it is returned by reversing with the lever in.

Oh, Now I get it, you keep it in gear. You're bringing back in high gear. Outstanding@@SwaplampJapan

Я не пойму как он в шаг попадает.. Арзимедову спираль если нарезает станок, но там шаг крупный. Объясни)))

@@user-vd2mq5vx7q у него на станке есть подача поперечная. Он не размыкает хода при отводе резца. Типа как обычная резьба, только поперек)

I think it will be tricky with long parts. Perhaps it's not so bad if both the knurling axes are at 45 degrees to the long dimension, but that's hard to hold. It won't be as fast but I think the old "put a v bit in the lathe and mill with it" might give better results

@@michaelandersen7535 I was thinking along the lines of bolting a vice jaw blank onto an angle plate (Using the reliefed holes that the jaws will eventually be mounted to the vice with), then mounting that close to the near end of the top slide, and as far above centre as you can without having the jaw get swiped by the cutter while it's at the back of it's swing (..... Did that sentence make any sense? I've re-read it a few tines and it still doesn't feel like it quite reflects what I mean). Once you've done one direction of cross hatching, move the angle plate/jaw setup to the rear of the slide and do the other cross hatching on the back swing of the cutters travel. It should result in a cross hatch that curves in slightly at the top of the jaw faces.