[carmamir]

Looking for best sacrificial table.

Milling aluminium (6082T6), stainless steel (316) and some wood.


Is MDF appropriate for milling steel and aluminium ??? (bottom table is T-table)


Now I wonder how will I fix clamping as I used t-nuts and it worked really well, thing is that if I will add some sacrificial table I will use ability to use t-nuts...


What is your way to use sacrificial table and what clamping are you using ?

[louieatienza]

I would hardly call stainless steel sacrificial material... Plus the thickness you specify for the hardwood and stainless might be difficult to keep flat. MDF is great but I don't know how well it would last when sparks fly from the stainless, and if you use coolant the MDF will swell and expand. You might want to consider getting a sheet of paper-based phenolic for your spoilboard...

[carmamir]

I start thinking about using some pre-cut MDF boards (as my CNC mostly is milling 10-12 models, and only sometimes I'm cutting something for myself).

[fixtureman1]

You could use extira MDF it is supposed to be water proof.

[JerryBurks]

Given that the stainless steel is very tough to machine methinks a proper machine vise with flood coolant is the answer. Now, the aluminum could be milled dry or with minimal cooling and clamping to a table will work if thick enough.