Scrap Heap Challenge

[TrickyCNC]

video didn't work ?can
we embed video on here ?

[Jonathan]

video didn't work ?can
we embed video on here ?

I've done it for you. Just went to the video on photobucket and copied the link called IMG code. This forum does not have HTML enabled, presumably to help avoid spam, so the html link you used wouldn't work.

Can't say I'm not surprised it works smoothly with that amount of rust. Have you measured how much backlash you're getting and how much play there is in the X-axis bearings?

[TrickyCNC]

luckily no backlash, but it's a struggle to preload the play out of the bearings.
I later told my dad about them, and he said " Oh yeah ... I remember now, that's why they were in the skip ! " LOL

Anyway, all my parts come out the correct size, and no issues cutting profiles or V carving. the play translates to 'nodding' of the Z when cutting 3D stuff though, with the short stop/start accel's. I plan to add some angle and skate bearings to the outer edges to stop this. sort of additional X rails

Like I said, I built this just to test theory and see how things work. but it worked too well to start again, so I just used it as is.

I'm more than happy with the MDF bed , Z, and gantry. No movement / flex / twist at all . which was what I wanted to test.