madkayaker
Pro sparkey Pro Welder
- Messages
- 13,683
Thanks all i will practice the welding more and give it a try when the welds look reasonable
As several others said pretty much all welding suppliers sell DPI- around £5 - £7 per aerosol. Bear in mind the dye is a bitch to remove from skin and clothing
Another destructive testing method (slightly easier going on the arms/vice, well hopefully anyway ) is a 'nick break'. Score the surface of the weld to a depth of around 1mm aiming for the root and nick the sides of the coupon too. Instead of surviving the BFH the objective is for the weld to break through the weld metal allowing a peak at the inside for porosity/inclusions etc. If the fracture bypasses the root and it fails along the toes of the weld then there's LOF issues