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Another tail wedge
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Author:  Pwoolson [ Thu May 05, 2005 9:12 am ]
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Well, I'm working my way up to maple. I figure MadRose is a good stepping stone. Here's my new wedge design on a madrose body.

Pwoolson38477.7598958333

Author:  Don Williams [ Thu May 05, 2005 9:23 am ]
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Hmmm... looks like you lucked out and got some of the Brazilian that's being sold as Madagascar Rosewood. I thought you wouldn't use that stuff?



Don Williams38478.297349537

Author:  tl507362 [ Thu May 05, 2005 9:24 am ]
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Wow! Fantastic, looks like you got this down. I love this design. I was thinking of doing a straight line with a ball in the middle on my next. Maybe the yin/yang in the middle of the ball. But I think that is too advanced for me, but for you...
Tracy

Author:  Bobc [ Thu May 05, 2005 11:01 am ]
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Very nice Paul. I like it a lot.

Author:  Terry Stowell [ Thu May 05, 2005 2:51 pm ]
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Hmmm. Nifty set of levers under that guitar....is that part of the smoke and mirrors apparatus?

Author:  Pwoolson [ Thu May 05, 2005 11:03 pm ]
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thanks guys for the comments.
Don. IT'S NOT BRAZILIAN!!!!! If it were I'd have to burn it or something rash like that. javascript:AddSmileyIcon('') Interesting that the smell of madrose is that of green olives. Not the bubble gum of brazilian.
Tracy, interesting about the yin/yang (or ying/yang as the hicks from my hometown think it's pronounced). I think it would be a good thing for one small design problem. What if someone wants a pickup or endpin? Would that screw up the design? Something to think about befor you spend a ton of time on it.
Terry: the levers are the smoke alone, mirrors are out of the pic.javascript:AddSmileyIcon('') Seriously, it's a vacuum pod. Alows me to "clamp" the guitar when it's in this state without any damage to the body. In my opinion, it's the single most important thing in my shop. Can't understand how anyone gets by without one.

Author:  LanceK [ Thu May 05, 2005 11:22 pm ]
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Beautiful Paul -
One question - how do you like that vacuum holder thingy -- Been seriously considering one --

Also do you have the vac pump offered by LMI?

Author:  Pwoolson [ Thu May 05, 2005 11:36 pm ]
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Lance, I love it. I've made several of them of various configurations but this one rocks. It gives 360? movement in the x axis and pivots down 90? in the y/z axis. Pricey but worth every penny as far as I'm concerned.
I didn't buy the vacuum from them. Got it off ebay. The one I use is a medical vacuum (not sure what it would be used for except sucking gunk out of bodies...I try not to think about that though). It pulls a continuous 18lbs of HG which suits my needs just fine. If you go the ebay route, look for "GAST" or "Thompson" pumps. And DON'T go the cheap ventouri route which makes your compressor run as a vacuum. It sounds good at first but you'll run your compressor nonstop and burn it up pretty quickly.

Author:  LanceK [ Thu May 05, 2005 11:42 pm ]
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Ok - so YOU made the work holder?
Could you possibley snap some pics?
I really really need one and had to drop the serious
cash LMI wants for it. Looks like the hardest part would be the circular holder it self? ANy tips on making one? I see an addition to the tools section brewing!

Author:  Pwoolson [ Fri May 06, 2005 12:02 am ]
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this particular one is from LMI. But there isn't much to it. The round top can be cut with a router (rosette cutting setup). You'll need to cut all the way through to make the circle then cut a chanel for your rubber gasket. I've made them out of MDF (which works well as long as it's sealed well, epoxy), UHMW works well. Any thick plastic will be a good choice too. The one I have here is AL. It's good for guitars in the white but is nasty on Lacquer. When the vacuum pulls it tight against the gasket, the finish of the AL shows up in the Lacquer. Pretty frustrting.

Author:  Don Williams [ Fri May 06, 2005 1:15 am ]
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[QUOTE=Pwoolson] It pulls a continuous 18lbs of HG which suits my needs just fine.[/QUOTE]

DANG ! That's practically a Black Hole!....



...perhaps you meant 18" Hg ?

   


pretty guitar btw...
Don Williams38478.4281018519

Author:  crazymanmichael [ Fri May 06, 2005 2:02 am ]
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i was under the same misapprehension regarding venturi vacuum pumps, but they do not need to run your compressor constantly. and the fix is not expensive.

after using two mechanical pumps for years i now use several venturi vacuum pumps for the gluing, routing, holding operations for which i previously used the mechanical pumps.   

see this site for very simple, clear information.

    http://www.joewoodworker.com/

Author:  Dave Rector [ Fri May 06, 2005 2:54 am ]
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Paul, what kind of material are you using for the gasket? I just bought a length of o-ring stock and am trying to decide whether it is too stiff or not. Haven't gotten around to trying it yet, just wondering what everyone else is using.

Author:  Pwoolson [ Fri May 06, 2005 3:38 am ]
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Don, good catch. Yes, 18" HG. Sorry, my wife is out of town so the editing doesn't get done as it should.javascript:AddSmileyIcon('')
Crazy Man, I hope you're right and I just had a bad experience. But my compressor couldn't keep up with it. So I was looking at the option of 300-400 on a new compressor or ~100 for a vacuum pump. I chose the latter.
Dave: I would think o ring might be too stiff. The gasket material I use is neoprene rod stock. (Tube stock is hollow and rod stock is solid). MacMaster Carr or Grainger type places carry it.

Author:  Steve Kinnaird [ Fri May 06, 2005 4:25 am ]
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As usual, Paul, very nice.

Steve

Author:  Dave Rector [ Fri May 06, 2005 6:28 am ]
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Thanks for the info Paul! Yes, the o-ring stuff does seem to be a little hard. I will still try it out and let everyone know if it works or not though.

It is plenty cheap and I can get it right here i town, so I figured it was worth a try.

Author:  Terry Stowell [ Fri May 06, 2005 8:11 am ]
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[QUOTE=Pwoolson]
Terry: the levers are the smoke alone, mirrors are out of the pic.javascript:AddSmileyIcon('') Seriously, it's a vacuum pod. Alows me to "clamp" the guitar when it's in this state without any damage to the body. In my opinion, it's the single most important thing in my shop. Can't understand how anyone gets by without one. [/QUOTE]

Hi Paul. Yes, I recognized your vac jig. I'm glad you've commented on it, I want one, and posted the vacuum poll a few weeks back. A vendor and I had some communication about offering a package to OLF. I'm waiting on a reply.

I was planning to make a vac jig this next winter. I bought a few "nifty levers" on a visit to Grizzly. A couple got used on other things though.... Did I mention how nifty they are?

I have a compressor and might go with the venturi. Till I get up to justifiable production.

Thanks to all for comments on this topic.

Author:  crazymanmichael [ Sun May 08, 2005 8:04 am ]
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paul

even if you've decided to use a mechanical pump read the joe woodworker info i referred to above. he gives you the way to make the mechanical pump far more effective and efficient as well.

terry

if you are thinking about going into vacuum clamping see the site i referred to above before you do anything. this guy has it worked out how to do a lot for relatively few dollars.crazymanmichael38480.8217476852

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