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| Need help making deep throat caliper... http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10102&t=4417 |
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| Author: | John Elshaw [ Sun Jan 08, 2006 5:51 am ] |
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Does anybody know where I can get a plan for making a deep throat caliper? I've seen plenty of pictures where it looks like people made their own using wood and a dial from a standard caliper. I just need something to help measure soundboard and back thicknesses. Any help would be greatly appreciated. Thanks! John |
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| Author: | Serge Poirier [ Sun Jan 08, 2006 6:00 am ] |
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Hi John, i'm pretty sure i saw one on Kathy Matsushita's website if my memory serves me well. Serge |
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| Author: | Shane Neifer [ Sun Jan 08, 2006 6:21 am ] |
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Here is one that I made using 1/2" id black pipe, a bolt and some scrap mahogany and maple. It works great! 
Although I welded (I use that term loosely I should say 'glomed') on a piece of trimmed angle iron to attach the dial guage I was thinking that you could just cut a hardwood plug for the end of the pipe and 5-minute epoxy it in place and attach your guage to that. Shane |
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| Author: | Dave Rector [ Sun Jan 08, 2006 6:33 am ] |
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Shane, I've been wanting to make one of these as well. Can you tell me where you purchased the guage? How wide of a measuring range does it need to have? And are there some kind of holes in the guage to allow you to attach it, or does it need to be modified? |
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| Author: | RCoates [ Sun Jan 08, 2006 7:07 am ] |
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Mine's not near as pretty as Shane's, but it is entirely functional. The base is some salvaged oak and the rest is just some pine scraps. The indicator I got from grizzly. It is just press fitted into a hole drilled into the pine arm. The throat is 9.5" deep. I believe the indicator has a 1" range. 
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| Author: | Shane Neifer [ Sun Jan 08, 2006 7:34 am ] |
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There is a tab on the back of the guage I have. You can get these things almost anywhere for 20 bucks or so. Grizzly is an option for you, I think I boaught mine at a local industrial supply place. I drilled and tapped the steel angle iron to attach my guage just because I hadn't done a lot of metal work and wnated too. But I think that you can just add the wood plug as I indicated above. I added the bolt to the bottom just in case I ever wanted to archtops, which I do!, so that allows you to get a 'shaped' plate into the guage which a lower flat surface won't allow you to do. Also, I can adjust the bolt to zero the guage, which isn't entirely necessary but I am a bit that way... I will post a couple more picks that may help, I just have to reduce them first, back in a minute or two! |
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| Author: | Shane Neifer [ Sun Jan 08, 2006 7:47 am ] |
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Here's the pics 
Hope they help! Shane |
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| Author: | tl507362 [ Sun Jan 08, 2006 8:56 am ] |
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John, Here is probably the simplest way to make one if you have an old bicycle laying around: 
This was made by one of the members in the CO Luthiers group. Very ingenius. Enjoy! Tracy |
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| Author: | Dave Rector [ Sun Jan 08, 2006 9:16 am ] |
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Thanks Shane! That clears thing up a lot. |
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| Author: | Shane Neifer [ Sun Jan 08, 2006 10:59 am ] |
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No problem at all Dave, good luck! Tracy, that is very clever! I like it! Shane |
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| Author: | Serge Poirier [ Sun Jan 08, 2006 11:07 am ] |
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Thanks Shane and Tracy, i happen to have a couple of pipes hidden somewhere in my shop, gonna build me one too! Serge |
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| Author: | John Elshaw [ Sun Jan 08, 2006 12:11 pm ] |
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Thanks fellas, there are some great ideas here. I think I might actually steal the fork off an old bike, at least until I get more time to make something a little prettier. Cheers! John |
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| Author: | Dickey [ Sun Jan 08, 2006 12:19 pm ] |
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Tracy if you manufactured some of these you could probably pedal them pretty easy. |
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| Author: | tl507362 [ Sun Jan 08, 2006 12:21 pm ] |
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  Good one Bruce! There's always one in every crowd!
Tracy |
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| Author: | Shane Neifer [ Sun Jan 08, 2006 1:17 pm ] |
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I'm hurtin' 
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| Author: | old man [ Sun Jan 08, 2006 2:36 pm ] |
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Talk about recycling! Ron 
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