Quote:
Originally posted by sanddrag
One more reason to go with extrusion is than you can slide the pillow blocks for chain tension adjustment. We would have been in major trouble without that. Another substitute is an adjustable or sring loaded idler sprocket to use as a tensioner if extrusion is not used.
You can also do the same thing with square tube but you woyuld have to have slots milled.
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Well, that's precisely why I don't like extrusion. The fasteners aren't terribly secure and can slide all over the place inside the t-slots. When you need to keep things in line or in certain spots, extrusion makes it harder.
While you can tension chain easily by sliding things around, those same things sliding around during a match can throw chains. I have first hand experience with that.