Wooden Pulleys – Turning

As per Part 1. I now have a working drill and hole saw that runs of an old computer power supply. I can turn wood with the same drill by mounting it in a vice and bolting the wood into the chuck.
Power supplyDrill running off ATX PSU Drill Lathe

Firstly I took an old piece of MDF that was once a set of shelves, then a speaker box, and now wasting away in the garage and cut two pieces out. One was 5″ the other 4″. It took about 10/15mins to get through the MDF, I thought the drill bits were a bit crap but I think the drill itself is probably still underpowered. (it was quite a cheap unit when I bought it) Also I found it was very easy to get on an angle, possibly the density of the wood was different nearer the edges but I found it was digging in quite a fair amount on one side or the other and I ended up with not very even pieces. The first one wasn’t so bad but the second significantly skew. I will borrow a drill press to try and get a better piece, at least until I build my own later.

I put a bolt down the center shaft and tightened it up and placed the bolt into the chuck of my drill, then mounted the drill in the vice. To get foot control I tied a rope around the trigger, which travelled along my workbench to a nail then down and tied to a metal ruler/level at a height where I could push it down to pull the rope and as such, pull the trigger. I had some control over speed, but it could definately be improved.

Working on first pulleyPulley being turned and carved

This is how it came out, I was quite happy with this result.
Finished MDF pulley

I built a second but it came out quite skew, I will use a drill press to re-cut the MDF, and if its faster than the hand drill I might cut two circles, and stick them together to form a bigger pulley. something like so:

plan for new wood pulleycross section new wood pulley
This will also give me a wider groove so I can use thicker belts.

Update 12 July 2010
I also refined my drill/lathe technique a little over the weekend. I think I will modify it further to become a slightly more permanent fixture with a bearing on the other side. because its only fixed to the drill its quite easy to push too hard and bend the drill which alters the shape of the turned wood. to start with I may just buy a 30cm peice of threaded steel, grind myself a nice 3 sided head on one side so that it fits into the drill nicely, and smooth the otherside and it can sit in some sort of fixed socket to provide a more stable shaft.

I also built the new pulley, twice as wide so it will accomodate more reasonably sized belts.


Pulley 3Pulley 3

Currently my plan for the belt is to use rubber from an old push-bike inner tube

  1. #1 by pete on January 29, 2014 - 3:24 pm

    Hi there i’m in the UK and I need a pulley to fit on to a 7mm or 0.275 inch spindle of a motor, that pulley/motor will then drive a flat belt, like the pulley you have in your second to last picture

Please read before posting
  • If you post any sort of link or URL in your comment it will automatically be deleted
  • All posts are moderated, I will approve your comment usually within 24 hours
  • It seems if you get the CAPTCHA wrong it deletes your post, if it looks dubious please copy your comment into the clipboard first so you don't have to re-write it. Or you can use the refresh button on the RECAPTCHA box
    • (will not be published)
      Protected by WP Anti Spam
       

Bad Behavior has blocked 870 access attempts in the last 7 days.