Quote:
Originally Posted by EricH
Looks like 80/20 extrusion. There are many places to get it. The advantages are ease of modification and use. The disadvantages may include (note: may) having to readjust where that front frame rail [or other frame piece] is after every match due to fasteners. There are ways to get around that one, though.
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341 usually gets around this by using T-bolt fasteners for prototyping, but once the final design has been locked down we drill through the extrusion to make solid connections that don't budge.
The only other drawback of 80/20 (and Bosch extrusion, which is what we use) is that its strength to weight ratio is about 20% worse than for 1" square (.125" wall) tubing. For our team we are willing to eat this extra weight for the flexibility (and ability to avoid welding) that extrusion gives us.