Quote Originally Posted by driftspin View Post
The math is sound :-)

I found that my box section 1850x120x80x4 mm was + 2 mm bend in the middle by welding heat.

I had a +/- 1mm error in spirit level. over 1850 mm...

It all add up. so 6mm thickness... i am not sure.. i did not have the best of spirit levels
So on the ends i have 8 and 7 mm thickness now.. 5.5 or so in centre.

I had some leaks while pouring.

Mostly because of heat from the shop heater on the channel sides.
Wood dried and bended.

Can see through under the square rails through the epoxy now
Make sure to use packing tape on the sides ... best tip ever.

Ok hope this helps.

I have steel gantry so more pouring on there for me.

Get the A pack.. it is 50 gbp or so.



Grtz Bert.


If you like to gamble a little...

Carbonwinkel.nl is where i bought.
Google translate is your friend here.
GLS delivered from German warehouse.

w300 5 hour potlife @ 75euro for 3kg.

Has about the same spec compared to 105 209

First day you think it is never going solid









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All the steel frame is welded apart from the steel top rail tube section which is bolted on to allow me to shim the rails prior to pouring epoxy. I'm thinking of pouring in two sessions 1 day apart so it's still able to chemically bond but 1st pour of approx 3mm to try and fill any dips and also to find any leaks! Then 2nd pour a day or two later so that any depth difference doesn't affect the shrinkage.

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