Hi all my first on here i just brought myself a trailer i need to extend it by 12 inches so all im looking at doing is to cut the 50x50 5mm angle and mig weld the 12 inches to it just wondering if it will be as strong as it was before or will i have to buy a new complete lenght i have just brought a 250 amp max mig should be powerfull enough i hope all replys welcome