I will design CNC for wood/acrylic/aluminium and working area is 60cmx90cmx15cm. I plan to use T-slot for table top. I thinking about MDF, Plywood and T-slot. Then decision for T-slot due to it convenience for mount objects. If I use MDF or Plywood then soon I will go T-slot anyway later. So why not now, and I can also mount MDF, Plywood to T-slot too if I have to.
Question:
1. Type of T-slot table top suitable to choose? Is there standard/size to choose like aluminium extrusion? It made from aluminium right? or metal?
This one I can find in local shop is here is good enough? It made from aluminium 17mm thick/12cm wide. Pic1
2. I see one cnc from youtube change T-slot aluminium tabletop to sheet of metal. Due to it flex unlike metal, here is link.
https://www.youtube.com/watch?v=zdllMYgsAkg&t=6s
So it will be problem for T-slot?
If I have aluminium extrusion bar in the middle under T-slot just like this machine Pic2 will solve problem? Since those 2 aluminium extrusion in middle will support T-slot tabletop I guess.
3. T-slot wide is 12cm normally can I cut shorter? Should I? Example is 10cm. It will effect it strenght/stiffness? Cause it will effect the length of x-axis. That it must be step of 12cm like 60cm , 72cm , 84cm for example for that T-slot will fit without cut.