Jeroen Potters 's buggy build using the above plans. M.G. Becker 's buggy build using the above plans. The seat in centimeters. Use stainless steel. If the stainless steel bolts are to expensive or not available then use the best quality you can get.
Bolts can bend and sometimes even break.
It is stronger, less hardiness but more hardness. Read and study the design at least 3 times. Verify all measures. There could be an error. Try the bending sequence with a thin pvc tube or steel wire.