Rigid Frame for SmartBench CNC Router

While my Yeti SmartBench CNC router works fairly well, it wasn't as rigid and didn't have as much Z accuracy as I would have liked. I found a post on Facebook from Michael Walsh about building a rigid frame: / 2823898101247892
My Patreon: / johnsl
Parts list here: trains.socha.c...

[@Karvdcnc]

Very keen to see more of this I have a smartbench and looking to do something like this

[@PaulSteMarie]

I'm real curious about how this proves out over time. My projects using 80/20 extrusions have mostly used the blind connectors and gusset plates, not the angle brackets. 80/20 technical documents indicated that the blind connectors were the strongest, which is surprising considering they're also the cheapest.

[@careyw.4892]

John do you happen to make molds for people? I would like to hire you to make a mold for me for use with a buster beagle injection device if possible.

[@TheUofastudent]

Why not just put 1.5 mdf board as your spoil board !!!

[@GeorgeGraves]

Weird design. They must have done that to save costs - but boy does it like to flop around.

[@RobAustinonyoutube]

I dont think you understand how this machine works. Your accuracy in the z axis is going to be degraded with that there.

[@craigsunderland3849]

Can you explain? The video clearly shows bumpy y-axis movement as the gantry travels over previously routed material. As soon as a rigid frame is there, that doesn't happen? If there are dips and rises in height you are bound to see less z-axis accuracy.

[@RobAustinonyoutube]

He just needs to move his wheels to avoid the bumping on the z axis.
Doing it this way the xbeam is unsupported so he’ll get variables in the z axis height and the angle of the cutter.
It’s just not designed to work this way and it’ll flex.
He trying to use it like a traditional cnc but they are heavy duty to resist against flexing, the SmartBench needs to roll on the surface of the material to maintain accuracy.