Learning to cut trapezoidal (acme) thread on a long thin flex stock. What pros don't show us. Lead screw for a lathe, acme thread 18x4 LH. Thread form, tool bit sharpening, troubles and tool breaking.

For those who want to support the channel:
💖 https://www.donationalerts.ru/r/sidious
💖 https://www.paypal.me/sidworkshop

#SID #acme #threading #trapezoidal

👉 Facebook:   / specialinstrumentdesigns