Originally Posted by dsmdude
Anyone ever use one of these? Would it work good for an occasional 90 degree bend in 1/8" or 3/16"? Thanks for all advice!
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I would call and ask what the lower die opening and the die angles actually are. Over all capacity of air bending on 85 deg dies is a lot less tonnage verses trying to get 90deg bends on 90deg dies take coining or bottoming tonnage to get there. For a full 20 inch bend? 1/8" maybe 3/16" I'd have to see to believe. Probably why they put a 10" limit on 3/16". Is there a possibility of a demo before you purchase?
If the lower die can be changed out to different widths in relation to material thickness, would be a big plus.
As with most claims being rather boastful in extreme limits verses realistic to prevent damage for average materials. The tonnages developed will help classify its true capability for a consistent 90deg bend. You are at the mercy of balancing forces with a single ram. Which often is out of your control once the bend begins. Off center loading is a no-no. But I have heard others use another jack to either side if not both to get a full 90deg bend due to flex in the upper die on the outboard ends. Those guide posts can prevent you from sliding the material, so you have to make do some how.
Of course you may choose to do these mod's after purchasing to add to your plethora of tooling options for optimal results.
DC