wandersen
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I spent the day tuning up my HF throatless shear and a homemade bending brake.
The pictures are of the two best test coupons after a bit of practice.
You can see what they should look like from "Section 9" on the drawing. The test coupons all have a width of 1/2" and:
- straight 7/8"
- tapered from 7/8" down to 3/8"
I believe I can repeatably and accurately produce these parts. These are representative of the 36 various ribs I need to make.
The Steen Builder manual indicates these can be build out of 0.025" 4130, instead of the specified 0.035" 1025.
My question is bending parallel vs perpendicular to the grain on the 4130 sheets. My sheets are 36" x 18" with the grain going the long direction. Some of the ribs are over 24" long. With the thin 4130 material, and the generous bend radius I'm using, can I utilize my stock by bending parallel with the grain? Any disadvantage or problems I could run into?
Thanks,
Ward
Edited by: wandersen
