After following the usual instructions to mount an MDF wasteboard with threaded inserts, I found the following:
- Machine Type:
- OpenBuilds LEAD Machine
- OpenBuilds BlackBox
- MDF and T-rails
So now I have a better clamping solution, and I no longer have to lift the machine to replace the wasteboard and all done from the top.
- inserts were rubbish and pulled out
- after facing the wasteboard this scooped out a lower area so worksurface was not flat
- wasteboard attached by screw from bottom, requiring lifting of machine.
What you don't see in the pictures is I built a torsion box (search YouTube on how woodworkers create a dead flat worktop) between under the larger MDF surface and my worktop, by placing the 3 usually vertical 40x20 extrusion that supports the wasteboard into a H arrangement by cutting one short, and then using 40mm x18mm MDF beams to form ribs in between, all glued and screwed down.
The t-rails are glued and screwed down and lastly the strips of MDF wasteboard were routed with channels to hug down the t-rails. So now I never have to lift the machine above my head, its hard when the machine is in an enclosure!.
Now the wasteboard area is 100% within the work area so can be completed and evenly faced if necessary plus section of wasteboard can be replaced individually which is more economical.
The wasteboard strips are shifted up a little so the touch-probe and perform x,y,z probing without z-stop interference and get a repeatable x,y,z=0 on the bottom left corner of the leftmost wasteboard strip.
I used the machine itself to give me a square reference line engraved on x and y then started with the central rail, glued and screwed and left overnight to dry before coming back and fitting the rest either side.
I must say its pretty flat and more rigid with the whole machine screwed down.