I’m building an 25mm MPCNC with a usable work area of 550x550x89mm.
I’m using screwfix 25mm steel conduit. I initially hesitated over using this tube but it was by far the cheapest option. I asked to look at a bunch of 3m lengths and chose the straightest 2 I could find.
I printed the parts in a few different kinds of PLA on my ender 3.
I have a specialist nuts and bolts shop local to me and was able to buy exact amounts of all, including the elusive #6-32 hard to find here and in Europe. They came to £22 in all. I originally tried with the M4 but it was pretty terrible.
So far I’ve spent £190 for everything, not including a spindle which i’m yet to buy and the PLA I was given for free.
I’ll upload some photo’s of the progress soon.