"O" ring wheels

Because I have a few small electric motors - my preference is to use a prop saver on these. I invariably manage to lose the "o" ring after the propeller has plopped off.

I found that if you buy "o" rings from a "specialist" model store or an "o" ring designated for a prop saver through Fleabay - they are expensive - £1 for three.

However, wander down to the plumbers merchant and get a big bos with a variety of sizes for £5.



Trouble is - there are far too many large ones that I would never use.

Then while perusing the CEF Speed Contest forum - I saw what Roddie had done



and thought that's easy and another of his good ideas. I have hundreds of "o" rings.

So, a few minutes design and printing "et voila"