well just had a go at bending my rollbar... complete failure!!!! Packed it with wet sand, used a 50mm die etc etc
I was using ERW tube and I read somewhere to have the seam halfway between horiz and the bottom of the die. Tried to bend the tube with the rollers in nice and snug and the begger kinked staright in half like a coke can.
After much cursing and declarations of selling the stupid car etc etc I reconvened back to the garage looking at my £35 that I just put in the bin and thought well may as well try all other possible varients...
Tried it with the seam vertical and rollers untouched, kinked
Tried with rollers out on the last 2 holes (as I read that somewhere) seam horiz - kinked
Same set up but seam rotated to the halfway position - kinked
Tried with seam on the top - kinked
So I give up... stupid tube.... stupid tube bender
Not a good start to a day working on the car