The Secret Society of Lathe Trolls

C-Pilote wrote: ↑

Wed Feb 28, 2024 7:46 pm

2nd

I also really like your studio equipment! I would love to have a studio like that

C-Pilote wrote: ↑

Wed Feb 28, 2024 7:44 pm

Here’s a punk rock test cut and playback (video)

Your lathe looks great. The lighting reminds me of a mixture of steam punk, flux compensator and a ventilator from a heart operation. All in all, a fantastic journey back to the future.

New CH-9 cutting head (part 5) 10/2023 After the lighting has hardened, I can test whether the thing fits into the cutterhead. The shape and screws fit perfectly! - Lucky. . . 60_01.jpg . . But there are still a few other parts to be made, such as the retaining bolt with which the cutterhead is lat...

C-Pilote wrote: ↑

Tue Feb 27, 2024 6:37 pm

Here under the cutting head

Hello Chany, I have answered you in your post "Presto k8 /cnc motorized harm.".
Greetings Thomas

Hello Chany, I'm replying to your post here about PetG and VCA. Your cutting head looks good and the way I see it, your cutting pin is sticking out way too far from the torsion tube. if you mount the pin further in, you would have a much lower VCA (25°). However, I see the problem with the suction t...

Here’s my angle and set up Hello Chany, Your lathe construction looks very interesting. Especially the long carrier arm with the spring-loaded lever arm. Does the small stepper motor drive a counterbalance or does it lift the carrier arm - or does it do something completely different? The cutterhea...

New CH-9 cutting head (part 4) 10/2023 The "old" cutting head had lighting, but it was not satisfactory. We would call it "glowworms". That's why I planned really bright lighting for the CH-9 and incorporated it into the design. As the head is a lot smaller, it was a bit of a challenge because the ...

An excellent article on the subject of rake angle and VTA by J.I. Agnew: Vertical Tracking Angle Meets Stylus Rake Angle https://www.psaudio.com/blogs/copper/vertical-tracking-angle-meets-stylus-rake-angle-part-one Accordingly, the rake angle should not exceed the 2° mark and must be taken into acco...

... but the overall angle in relation to the disc (so in this case I guess 90+7°) Correct. About 90+7°. (in this case the rake angle is +7°). As far as I could find out, this angle is almost 0° or slightly more for DMM on copper. For cuts in lacquer at 1° to 2°. For cuts in PetG or PVC over 2°. Som...

If your plan is to cut PVC I've read Jesus say that the VCA should be higher than the usual one we see for lacquers, to compensate for the spring back effect of pvc. Then again I don't have any source to back this apart from a facebook comment. I found on their website that the default rake angle o...

I can't edit the message, by push rod I mean what you called the drive bar in that other thread. I've seen examples where they are perpendicular to the record, and others where they are perpendicular to the torque tube. If anyone has infos about this that would be appreciated ! In my case, they are...

Wow! Great progress - congratulations. The ten months of math and brain smoking have paid off. Now you have a great result.
Greetings from Austria
Thomas

I can send you one, you want a father or mother stamper? WOW! That is wonderful! Thank you very much and of course I will pay all transportation costs. If there are any other costs, please let me know. I will send you my contact details and address by PM. I'll ask you to decide whether it's the fat...

I looked on E-Bay but don't know the seller. But if someone needs such a cover plate for a Presto lathe, then $15 would definitely be worth a try - I think. noch 3 Tage: https://www.ebay.at/itm/226005143791?itmmeta=01HQ1EY9WR384XA3YJYR09QHHG&hash=item349ef4d0ef:g:-7oAAOSwOJtlzpoH&itmprp=enc%3AAQAIAA...

New CH-9 cutting head (part 3) 10/2023 I had to play a bit with the programming, because Mark distracted me with it and I spent days on these things again instead of continuing! Thanks Mark! :lol: (I get distracted so easily :roll: ). But now I have found a little time to continue writing the repor...

Hi Thomas, I'm glad you found this helpful. ... Hi Mark, I've done it with the timers & PWMs! - Thanks for the tip, it's much more elegant to program. I also took the opportunity to reprogram the turntable lighting. Previously I only had blue or red light (LED strips) to indicate the status. (Blue ...

nice design for the head! it goes very small in size. great job! did you change the type of aluminium from last time? I'm glad you like it. The aluminum is (in principle) the same material: EN 5083 (ALU AlMg 4.5Mn). However, with a small defect that was only recognized by the electroplater. The alu...

Neuer Schneidekopf CH-9 (Teil 2) 09/2023 The housing parts of the CH-9 cutting head are ready from anodizing. The wait was worth it. I chose a slightly more elaborate grey anodization and deliberately did not sandblast the parts as I did with the previous models. Because I love the slightly more te...

Hi Thomas, I'm glad you found this helpful.... Hi Mark, thanks for the support. It's helpful again. I have started to study these three pages since the last letter. But I still need some time before I can apply it (at least until the end of the week). https://www.schaerens.ch/iot-arduino-timer/ htt...

Hi Thomas, A better approach to doing the phase control is to use an unused hardware timer setup ... will need to dive into the datasheet for Atmel ATmega328P processor to learn how to program the timers. The Arduino c++ complier allows you to directly reference all of the CPU hardware registers. F...