Firstly I’m new so please forgive me if this has already been discussed. I’m thinking about building my table top for my first MPCNC build with a removable top and a recessed bottom so I can have both a short Z axis when routing, but then remove the base and let the Z axis come down for 3d printing.
The legs for the MPCNC would sit on top of the ledge and the Z access would be very close to the top of the travel:
[attachment file=“cnc_table_top.png”]
Then when I wanted to do some 3D printing I would remove the platform and the bottom would be sunken down giving me lots of room for Z travel:
[attachment file=“cnc_table_top2.png”]
Does anyone have any advice if this would be a good setup to maximize rigidity but still providing some flexibility?
This would be too eliminate any possible flex in the waste board I am guessing.
I would also install threaded inserts on the box face frame to be able to bolt the waste board down consistently without causing undo wear and tear on the box assembly.
Thanks for the suggestions! I will definitely be incorporating them. I’ve built the table and partially assembled the kit. I haven’t cut out the removable section yet, I wanted it to keep the table square as possible for now.
You’ve got it. Remember to size the Z tubes for the length you need when the drop table is opened up. It’s fine to have the extra length above the gantry as far as I imagine - that’s how mine is anyway. And yes - you definitely wan the cross brace. I’ve got to add something under my removable spoil board to stiffen it.
