Just thought I would share how I build a bow case. I use 3" or 4" sewer pipe, depending on what I want. The 3" works great for straight or mild R/D longbows. Just slip your longbow into a sock and into the tube.
This sewer pipe has a 3,000# crush strength. It is much lighter and cheaper than sked 40 though.
Here are the two different sizes. The 4" model will fit several longbows. I've had my pronounced R/D and a straight one, with a little extra room. It would hold 3 straight ones with no problem.
The handle can be rigged many different ways. I had the leather already, but nylon strap would work as well. I used a coupler that I cut in half and slipped on to the place you see them. It enabled me to drill tiny holes to start some 3/8" long sheet metal screws with a drop of super glue on the ends for lube!
Works great, and they don't protrude into the inside of the tube. The coupler halves are glued on with pvc cement.
One end has a cap that is glued, and the other has a "test plug", which was the most expensive part at $4.43 and 6.47 depending on the size.
I just measured my longest bow and added 5 inches for length. You can glue some foam to the glued on cap before gluing it on for cushion on the bottom end.
Works great, is light weight, and best of all, can be built in less than an hour very inexpensively. The printed ink that comes on the pipe can be wiped off with acetone.
Total cost, not counting the leather, was right at $16 for the 3", and $19.50 for the 4".