Broom and Paint Handle Threads 3/4"x5

by halley, published

Broom and Paint Handle Threads 3/4"x5 by halley May 6, 2013
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I have a few paint tools, such as telescoping poles, that all use the same standard threads. Besides painting, I've seen the same or similar standards used for brooms, lightbulb grips, pool tools, and gutter cleaning poles.

Apparently there are two standards common in the USA, both based on a 3/4" dowel (0.75 inch or 19mm). One standard (shown here) has a pitch of 5 threads per inch; the other has 4 threads per inch. However, there is a LOT of variation due to the manufacturing of wood, plastic, milled aluminum, and cast aluminum tools on the market.

These objects are just the blanks, ready for combining into any other project. I've put in generous clearances, and a tapering thread at the shank end to help keep tools snugly fit regardless of thread sizing. I will post a 4-thread version too. Do any other global standards exist for these pole fittings?

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If you happen to still be getting messages from Thingiverse, I'd also like to have the 4-thread-per-inch version. I printed the 5 version and it "works", but I think the 4-thread version would be a perfect fit. In the meantime I'll try to create my own...

Any cad files for this?

I may want to use this model to improve my ice scraper that I just uploaded. it has three blades and I was going to make it so the handle would have a screw in attachment for a snow brush. check out my model and let me know what you think. my username is lauriebonnell52

I see you never did post the 4 thread pitch version. Did you get around to making it? I could use it. Seems like all the broom handles I own are the 4 thread variety.

What CAD software did you make this in?

I used Blender for this. It has a bolt design plugin which gave me a starting point, and I adjusted from there.

Sorry just saw your post, I was wondering because I needed one to fit a squeegee thread, I ended up making made one in solidworks. Awesome post though.

I would appreciate the 4 thread per inch version if you have it.

I made these for some old mops that had been lying around (fitted good) and also to check the "threadmaking" capability of the printer. They printed perfectly and screwed together with no cleaning - can hardly even see the join!

This morning I had a small plastic threaded piece come off my umbrella at the point. Luckily I didn't lose it, but this might be a good place to start making a replacement piece if I had.