Replacement cnc 'collet'?

[denniseagles]

Like a few others in the forum, i’m now having some trouble keeping the end mill in the ‘collet’. cant tighten set screw (even with loctite).

Screw threads in ok without end mill inside, but with it in, doesnt tigten. Suspect the soft metal that the collet is made from (brass?) has perhaps threaded from grub/set screw right a point of connection.

Does snapmaker sell replacement collects - they arent shown on parts/accessories page ?

If not, any suggestions where I could get a replacement, preferably not made of tougher material than brass.

[epoe]

This is a topic to which there are already many answers in the forum. I can’t judge if one of the answers is correct, because I don’t have a Snapmaker yet and I won’t buy one until this vulnerability is fixed.

The stronger CNC machine is great, except

Snapmaker should consider implementing a collet for the CNC and perhaps even use Dremel brand collets. Here’s an inexpensive ($6.98) offer from Lowes That has 4 different collets and the nut: https://www.lowes.com/pd/Dremel-Quick-Change-Collet-Nut-Set/1000148855?cm_mmc=SCE_PLA_ONLY--ToolsAndHardware--RotaryToolsAndAccessories-_-1000148855:Dremel&CAWELAID=&kpid=1000148855&CAGPSPN=pla&k_clickID=a847dcbe-9042-4e46-a595-1028ff9aaa4a&gclid=EAIaIQobChMI1_KizKqb1wIVAgRpCh01TQMwEAQYASABEgIzrvD_BwE Wh…

CNC Module Setscrew

The cheap little setscrew that holds the bit in place flew out while carving. Unfortunately I was outside with the snapmaker due to the dust, so I have no idea where the setscrew landed. I would guess I have stripped the threads from occasionally over-tightening, but with this setup you do not know you are tight until the allen wrench slips. Does anyone know the size of the setscrew? @Rainie @whimsycwd Any plans of making the collet a little more robust - maybe more like a Dremel collet? http…

[denniseagles]

Thanks for your reply. I know there are many posts re this, but they are different to the question i’ve asked - i.e. (a) does snapmaker sell replacements; and (b) alternatives, preferrably tougher than brass.

[denniseagles]

Update to my original post:

I’ve spent lots of time googling overnight … and one thing I’ve learned is my use of the word ‘collet’ is wrong … this part is commonly referred to as a ‘coupler’ (an actual collet would be much better).

They appear to be very common, but at this size, not for CNC use, but rather in the RC Aircraft space. Nearly all appear to be brass or copper (which I think is even softer).