What do you intend to construct your frame out of? (steel tube or steel pipe)
...there's a big difference in the (2) materials & how their bent
Have you sourced your materials yet?
Steel tube usually costs roughly twice as much as pipe
...& it's harder to find too
FYI:
All of my karts are made outta regular old steel waterpipe
...& were formed with a Harbor Freight bender
* Also, I've noticed that material prices have "gone thru the roof"
...for the last few years I've been getting 21" pieces of pipe for ~$23.00
...but, when I went to get a couple of "sticks" (technical term) of pipe to build my Slingshot kart, they charged me a "whopping" $43.00 per piece
It was a "new guy" so, I asked for the "boss"
...& he said "everything has gone up "dramatically"
...& everyone is "trippin' (another technical term) about it
I asked "what the heck is the difference"
...& he said (questioningly) "the new administration, that's in office now?"