I’m happy to share some photos and some tips about the design and construction of a line bender. It really isn’t that complicated, and I put it together after scouring the web and YouTube, of course….
I slapped my first version together in a couple of hours. Just treat it as an iterative exercise and you will be able to decide the size and angles that will best fit your purposes.
I use good multi-ply “blondewood” plywood from Lowe’s/Home Depot for the main construction. In addition, I used two layers for the main body, because you want it to be both strong and stiff.
I used 2x4s as legs so I have clearance to use ViseGrip welding clamps to hold my workpieces. I also use drill press clamps a lot.
The hinges are from Lowe’s, but you can find similar hardware at most building supply stores:
- I use their 4″ strap hinges, but I recommend that they are the heavy-duty, tight-pin hinges like these.
- I find that the plastic spacers keep the hinge from being sloppy, so the hinge stays consistent on the bend.
- I hacksaw off the straps because the straps only need to be about an inch long past the pin, not the full length. That still leaves you two screws in each leaf of each hinge.
I use the Lowe’s aluminum channel to shield the nichrome wire. I think this is 5/8″ wide stuff. That gives you a nice radius on the acrylic bend.
I’m using magnetic catches on these angle stops. Be sure they always seat at the same place. These have some give, and they weren’t designed to be precision instruments, but they work pretty well.