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2 speed breast drill

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Forum topic by oltexasboy1 posted 07-16-2015 08:08 PM 617 views 0 times favorited 7 replies Add to Favorites Watch
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oltexasboy1

240 posts in 1171 days


07-16-2015 08:08 PM

Topic tags/keywords: drill-driver breast drill flea market

A few weeks ago I bought a 2 speed breast drill, at a flea market, that I have no idea who made. I finally got mostly finished with my version of a dutch tool chest and have room to work on my bench again. I have pretty much got it to a usable state (new roll pins, spacers, a little grease) It has a 3 part jaw that appears to have had really small springs between each jaw to hold them apart when the chuck is opened. The problem is that they are gone. I considered using the springs from ball point pens but the diameter is wrong( too big). Any body have a suggestion. There are some spring companies here, but I figure that with the usual “minimum purchase amount” they would cost me more than the $14.00 I paid for the drill.

-- "The pursuit of perfection often yields excellence"


7 replies so far

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Kazooman

628 posts in 1419 days


#1 posted 07-16-2015 08:15 PM

Try your local hardware store ( not the big box store, a real hardware store). Most have a good slelection of springs. You should be able to find something that will work. The store I use has a great selection of machine screws, washers, hanger bolts, springs, etc., etc., etc., all for sale by the individual piece. They do not gouge on price.

View Johnny7's profile

Johnny7

208 posts in 557 days


#2 posted 07-16-2015 08:37 PM

You may want to go have at look at THIS

View bigblockyeti's profile

bigblockyeti

3668 posts in 1188 days


#3 posted 07-16-2015 10:04 PM

This guy did a full work up on restoring a Stanley breast drill, I think it was a two jaw chuck though. None the less, some of the information could be relevant: https://www.youtube.com/watch?v=r5vZzH9w38g

View ElChe's profile

ElChe

630 posts in 803 days


#4 posted 07-16-2015 11:22 PM

I’ve used springs from RC cars to repair various doodads. At my local hobby store. Well, when it was open. Now it is closed. Smart phones ki9lled RC cars.

-- Tom - Measure twice cut once. Then measure again. Curse. Fudge.

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Tim

3119 posts in 1428 days


#5 posted 07-17-2015 12:05 AM


There are some spring companies here, but I figure that with the usual “minimum purchase amount” they would cost me more than the $14.00 I paid for the drill.

- oltexasboy1

They might, but you have to weigh how much it’s worth to you to have a working drill vs the time spent searching other places to find one. In the blog Johnny linked to I wrote about how I got lucky searching through the Amazon listings and found the springs I thought I needed for $5 shipped. But turns out I didn’t measure accurately enough and the springs were too small diameter and too long when compressed.

Springs are sold by free length, compressed length, diameter and wire size among other things. You need to get the compressed length right or the jaws won’t close all the way down. The compressed length is mostly about the length and wire size. You want the spring diameter right so they will fit and stay in the holes.

So measure the holes for the springs carefully, a drill bit works well if you have them to 64ths. The spring should be a slightly tight press fit. Then try to measure the depth of the holes and how close the bottom of the holes will be together when the chuck is tightened down all the way. This will be the maximum compressed length you can have.

I agree your local hardware store that stocks that kind of thing would be your best bet if you have one, but I don’t. Amazon may well have it but finding the right spring sizes on there took a lot of time and persistence. After that it’s either scrounging springs or ordering from a spring specialty place on the web.

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oltexasboy1

240 posts in 1171 days


#6 posted 07-17-2015 04:23 PM


I ve used springs from RC cars to repair various doodads. At my local hobby store. Well, when it was open. Now it is closed. Smart phones ki9lled RC cars.

- ElChe


YEs indeed I used to work on my boys slot cars and the springs should be pretty close, thanks. I had not thought of them. 14 heads are better than one right ? thanks again peeps.

-- "The pursuit of perfection often yields excellence"

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oltexasboy1

240 posts in 1171 days


#7 posted 07-17-2015 04:28 PM

regarding length and diameter issues. Since I was a heavy eq. mechanic for so many years I have a set of snap gauges and calipers and micrometers that I used for engine work I have the correct length and diameter.Thanks for all the info and good info folks.

-- "The pursuit of perfection often yields excellence"

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