expanding foam and steel frame

[mekanik]

have a search for polystyrene resin it's considerably cheaper than epoxy resin.I had a bash @ Infusion transfer a while ago and used it for prototyping.the West Epoxy costs a fortune. try east coast fibreglass supplies, also if your using it for mixing with aggregate the stuff used by roofers might be cheaper

[Swarfing]

Years ago a company i worked with a company that used to repair failed screeds. This was done with an epoxy resin, the difference was it was very thin and just poured over the sandy screed. It soaked in and set hard fixing the problem. Now what you can do is partly similar to Jazz's suggestion. Take some granite chippings (or pea shingle) and mix this with silica sand as your base. Use some epoxy resin and thin it down with automotive thinners and ram it down the tubes. Or fill the tube with the dry mix and add the liquid (do it in small sections). This will give you the result you want at a reasonable cost. Now the reality is you are filling a tube so the type of resin does not really matter and ordinary fibre glass resin will do.

[JAZZCNC]

Eh bouncy Tit's why has your name changed.?

That's a good point about any old resin will do and I hadn't though about it like that but still any resin isn't cheap and the dry sand comes out if needed that's why I like it. Thou I can see the benefits for some areas like hollow Gantry's.!!

[Swarfing]

Had to change as the name did not fit the tits...LOL! At the end of the day if it is going to stay you can fill it with any old Sh*t if a resin is involved? you even add foam beads to the stone ballast to cut down the weight if needed.

[Gytis]

Thanks guys for the info

Ok.., it seems that expanding foam will not work, I'll go with sand, just one question,
I have to fill with sand whole frame + bed?, or just frame sides?