I've been asked about making clamps by several people lately, and thought I'd post a How-To on the subject. Step by step follows in a post below.
It's quite simple, and doesn't take much to make some nice custom clamps for whatever you need. The hardest part can be drilling the ends for the screws.
I've been making clamps for DivAir diaphragms, Scuba exhaust diaphragms, hose loops, etc. I've found that hoses are fairly inconsistent in thickness, so they aren't really a one size fits all kina deal. If you have a vise, metal shears, a centerpunch and hammer, and a drill, you can make your own!
I make mine out of different stainless steel materials. I have some crimp type clamps I got on some hoses that make a nice sturdy screw on type when flattened out and re-bent. I also use Constant Velocity Joint boot clamps (an automotive part), which are just thin strips of stainless steel, much like a zip-tie. The CV Joint clamp material is easier to work with. I bought a package of 36" long ones on eBay, and they are available at most auto supply stores. You also need some stainless screws and nuts. I use 5-40s, 4-40s, and 2-56s depending on the width of the clamp.
Clamps will look like this:
The short bit fits under the opposite end to keep the clamp from pinching whatever you're clamping and gives it a finished look.
You can make thinner clamps by carefully cutting the wide band with tin snips, then filing the edge. I clamp the material lengthwise in the vise and draw file the edge in sections until it's uniform and smooth.
Dang son, that's some rill purty work! So, yer sayin' that ya make them HW-clamps outta CV-boot clamps? I've got a bunch'a regs that need them, for the exhaust-tees and mouthpieces: I really don't like the way zip-ties look when they weren't originally used...
These directions are generic, but the example is for a hose clamp. Measurements for screw tabs will vary with application.
1. Cut the end at a slant, and insert the strip into a vise leaving about .5-.75" sticking up. Not critical, just leave a section hanging over.
2. Bend it down.
3. Raise the strip about .25" and bend it down.
4. Take the strip out of the vise and pinch the .25" section more closed with your fingers or a plier.
5. Pinch the section closed using the vise, and bend the long part down.
6. Remove the strip from the vise and measure it for length by wrapping and marking. I left a .25" gap. This can be inexact. Wrapping a string or something flexible around then measuring might be better.
7.Go back to the vise and bend the other end at your mark.
8. Repeat steps 3 and 4 on this end, making a .25" double bend.
9. Cut the excess.
10. Test fit.
11. Centerpunch and clamp in the vise. Carefully drill the hole.
Touch up any sharp edges and points by filing or grinding.
I hope that's clear enough. Pls post any questions by referring to step #. The good news is, if you didn't get the measurement quite right for your application, your screw-up might fit another. Save them all. Hoses are all different thicknesses.
You might need to make more than one to get it right. Be patient.
I thought I'd bump this tutorial, since I have needed clamps for various regulators and have been making quite a few. I make them for hose clamps, Scuba exhaust diaphragms, DivAir diaphragms, and the like. They are fairly easy to make, look way better'n zip ties, and work great.
As I have mentioned, drilling the screw hole is the hardest part. I hope this helps anyone who needs to make clamps!