# How can I hold two cylinders together and be able to release them?

I have two cylindrical (metallic) objects, of different diameters but both above 0.5cm and under 2cm (actually it's a bit more complicated but let's leave it at that). Their lengths are at least 0.5m each.

I want to hold these two cylinders together against being pulled apart (away from each other perpendicular to the axis); it would also be nice if I could prevent them being pulled in opposite directions along their axis, but that's not very significant.

I could obviously tape them together, or glue them together; but - that's a semi-permanent solution, and taking them back apart and together again repeatedly is either messy, ineffective or impossible. No, I want something that can be undone or taken apart.

PS - Help me tag this question?

• Are they ferrous? – Caius Jard Apr 2 at 19:12
• @CaiusJard: They're metallic, but I don't think they're ferrous. – einpoklum Apr 2 at 19:17
• May you drill holes in the cylinders? – Caius Jard Apr 2 at 19:41
• @CaiusJard: One of them - definitely not, the other one - not sure. But write your answer, because other people may have different constraints than mine. – einpoklum Apr 2 at 19:45

Use velcro cable ties:

Rubber bands also work.

There's this kind of part which you can get:

It's (sometimes) called a "U clamp". And there's another interesting invention called a "sleeve nut" or "sex-bolt":

So, if you:

1. Get a U clamp with the diameter of the larger cylinder
2. Get a U clamp with the diameter of the smaller cylinder
3. Get a sleeve-nut which matches the dimensions of the hole in the U-clamps (perhaps adjusting the width of one of the U-clamp holes)
4. Fasten the two clams with the two sides of the nut and a screwdriver or Allen wrench

It should theoretically give you the kind of device you want. But TBH this is just an idea which should work, not something I've tried yet.