MDF or ply?

[alex wight]

The foamex is a relatively strong material when supported. It's lightweight which is why it's used for shop signs ect I used a scrap piece to just scratch the surface when doing jobs, to let me see what I was ready to do on the real material. It saves making errors on the real job. It's non porous as well so is very good for a vacuum bed, and if fluid is used, it doesn't swell either.

[John McNamara]

Hi Eddy C

T Nuts are OK but they tend to work loose and fall out after they have been used a bit unless you put another sheet behind them.

These are better....



https://www.google.com.au/?gfe_rd=cr...serts+for+wood

You just drill a hole and screw them in with an Allan key (or see video below for another type). Very strong.

http://www.youtube.com/watch?v=tIhEqoKE8Dc

Regards
John

[EddyCurrent]

Hi Eddy C

T Nuts are OK but they tend to work loose and fall out after they have been used a bit unless you put another sheet behind them.

These are better....



https://www.google.com.au/?gfe_rd=cr...serts+for+wood

You just drill a hole and screw them in with an Allan key (or see video below for another type). Very strong.

Installing Metal Threaded Inserts For Wood - YouTube

Regards
John

Thanks John, I've used similar to those before, I see what you mean about the T Nuts with vibration about. Do you think he's correct when he says it's not a screwdriver slot ?

[Boyan Silyavski]

Funny, but i use one by one as sacrificial beads the plastic doors of a McDonald restaurant i found near the trash Hard plastic filled with paper or fabric.

I tried aluminum bead and slowly i started f^^^ing it up. MDF did not work. But bolting sacrificial plastic layer/10mm in my case/ and fixing all the jobs except aluminum, with hot melt glue gun works best for me. Fast, cheap, easy to fix, reliable and easy to scratch and clean from the plastic bed, wood or plastic part.