M3.5 v M4

Mostly Printed CNC - MPCNC Troubleshooting
1

Hi,

So I was double checking my BoM compared to the one on the site and noticed that the M4 bolts had changed to m3.5 since I last looked.

So I switched to M3.5, until I found out that M3.5 nylocs cost around 8x the price of the standard M4 Nylocs.

My question is will M4 do? I think paying 8x the regular price is a little excessive.

Thanks

2

I don’t know if they fit in the roller f’s or in some pockets. If I go to the hardware store that carries the metric stuff I can take a look, but I went off another users translation of the list and I have not heard any complaints. But when you take a look at it a #6-32 is really close to an M3.5 not an M4.I would say if the m4 lock nut fits in the roller f you will be fine.

3

I used M4 screws and nuts. They fit in most places without issue, but I had to do a little filing on a small few slots. I just gave each hole a run through with a 4mm drill bits for the screws. Standard M4 (not nyloc) may fit ok in the slots where the nyloc nuts were too thick to fit.

4

Thank you both, Ive got some m4 nylocs to try, if they fit I’ll order some more and drill the holes for 4mm.

I was sourcing my conduit the other day and realised that the place where I get my conduit for basically no cost, stocks all its conduit in imperial sizes and I have printed the IE. My question is whether 1" conduit will work in an international machine, on paper it’s .4mm between them.

Another question I have is what is the preferred material for conduit? I can get either aluminium or steel, but I am leaning towards the steel as my instinct says its more “linear”.

Thanks once again

5

It won’t work. A few have done it, But I am not sure how well that will work in the center section.

You want steel.

6

All the new updated parts are being made in 25.4mm as well, so as soon as all the parts get remade we will have a 3rd version as well.