Well, being the MK3 this is my best yet. Hopefully not for long when I complete the MK4 but we'll see. This uses the same bearings as the MK2. It also uses a spring that pulls together, but I don't know what they're called. I had one lying around but I'll try to link a similar one. This one DID work BUT it still couldn't cast like the others. SIGNIFICANTLY better though. This one ratchet is also much better designed. It's fairly durable and stops in a second. However, it can bend over time when printed in PLA. MAYBE PETG would fix that. Or a remix, which if you do attempt I would suggest sort of mirroring it and having a screw on either end so it can't bend. I'd consider this one fairly functional though. It uses thumb screw hose clamps to attach to any stick which are also listed below

It needs a
1x 1/4 20 2.5 inch screw and a bolt to match
5x 6 32 0.5 inch screws
3x 6 32 0.75 inch screws
2 ball bearing 22mm x 8mm x 7mm
and 1 extension spring. I tried to find an individual but honestly idk what size it'd be and this costs the same amount. plus you'll have a whole bunch of other hardware which is great. Sorry, I really couldn't find one. The distance is 1.4 inches if that helps
https://www.amazon.com/Ruibapa-Assortment-Extension-Compression-P-038-kit/dp/B0B9BDRK25/ref=sr_1_3?crid=3M13CE35UJ6YA&dib=eyJ2IjoiMSJ9.rB6cBjOq1f-t8E_riuTcwgzRl04rDWGdPW6G_zlyv2mWseCPy5JWp80YTxwwK0qBBQBd6qvcogzF_ZjdjljKU3OLs92_q5lja9id0k_896NrKWGlcCkeUZ8hYRR_o7vP-zbjF9mIgwgKS4jn6MKnt4PDyYqJ91wAWkOWzqj42U0XG78y560sp4EkiqHTe_DikJc59zWlEs-q0qmHKWOunk_biLkjBSRpvVG9pn4k2CM.vH1K7LZWG5nfGpKrKw27JqAD_KnMmrRUuTf8xeEdm0E&dib_tag=se&keywords=tension%2Bspring%2Bsmall&qid=1730948853&sprefix=tension%2Bspring%2Bsmall%2Caps%2C148&sr=8-3&th=1

https://www.amazon.com/POWERTEC-70247-Stainless-Collector-Clamps/dp/B07RTB4KMC/ref=sr_1_10?crid=2QDRSKEJQ43LX&dib=eyJ2IjoiMSJ9.cpTcRQu-1IjLTwvQPvZ5FamPQ4c4xy4bLCAvPN7HGu-H1qTN1yLy8NU-J9Vkn-FMI_y22vvyiVY1vJ82UX3efUyrkouKLMxDeOuELKpGICdMbR_PzUTnYp5o0Ur0PPPFDn7x0Rs-zisZZ529DkRhg9Mqx2SWCR2ov4CbM505gcarmI0eypAp9gUV05q_kXFWlKOAWccq2LK90j9c_kDafX-ac-yjtQWO2SaaiHZkzrCLLcc5txRZfNguoUQZPTAHtfYFvBeAL-cOZL3oX9g_OdIpo8UlfI3Rm4olg9qkEos.U-qwsfH1m6xbOTP6PigiXlcpAPNydPra1_fGIUg5uZQ&dib_tag=se&keywords=thumb%2Bscrew%2Bhose%2Bclamp&qid=1730985497&sprefix=thumb%2Bscrew%2Bhose%2Caps%2C144&sr=8-10&th=1