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Finally got to use my new Stewmac sissor jack
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=20857		 Page 1 of 1
Author:  Michael Dale Payne [ Wed Feb 04, 2009 12:22 pm ]
Post subject:  Finally got to use my new Stewmac sissor jack
Early last night a local friend of mine brought over his 1972 Yamie (Yamaha) FG260 12 string with a 2" grain line crack in the rosewood back. I first worked in some Titebond into the crack placed a magnet on a piece of double sided tape backing (the non stick stuff you pull off the tape) and located it directly over the center of the crack and taped in place. I then placed the jack inside the guitar by hand till its magnet was drawn to the one on the outside then used the jack to align the crack edges and allowed the Titebond to set then removed the jack. I then lightly double sided taped a small graft to the head of the jack, buttered the graft and repeated the locating process again using the magnets. I jacked the graft into place into place and allowed the Titebond to setup for 1 hour. I then removed the jack. Lucky for me the double stick tape came out with the jack. I bet that won't happen again. I cleaned out the finish crack and laid in a thin bead of med. CA allowed to cure for 1 hour and then use Frank Fords scraping method to remove the excess build up and sand through 1000p. I then just lightly buffed the back with med. Fine and collected my reward.

The jack was a Dream to use! [:Y:] I can't wait to use it again [clap]

Attachment:
Scissor_Jack_Detail.jpg
Author:  charliewood [ Wed Feb 04, 2009 12:48 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
Cool beans Hesh - what surprises me is that you bought one of those units in advance of needing it for a job - thats forward thinking!!
Cheers
Charlie
Author:  Michael Dale Payne [ Wed Feb 04, 2009 12:56 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
Charlie!!!!!You DIDN"T just call me Hesh did you??????? wow7-eyes laughing6-hehe
Author:  Bob Garrish [ Wed Feb 04, 2009 12:58 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
charliewood wrote:
Cool beans Hesh - what surprises me is that you bought one of those units in advance of needing it for a job - thats forward thinking!!
Cheers
Charlie


That's a sneaky trick, Hesh, using Michael Payne's account and all...
Author:  charliewood [ Wed Feb 04, 2009 1:22 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
OOOOOppppppssssy daisy Michael - [uncle]
thats it for internet for me today - its turning my brains into mush LOL
anyhow take everything I said to Hesh and reaaply towards yourself Michael
Sorry bout that.......
Author:  Joe Sabin [ Wed Feb 04, 2009 1:40 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
Doh, where's that post-post edit button when one needs it.

It did sound like a Hesh post in a way though.

I want one of those, but have no use for it as I do no repairs, but it's just cool. Perhaps I'll make a dollhouse lift for a forward thinking youngster. [:Y:]
Author:  Michael Dale Payne [ Wed Feb 04, 2009 1:55 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
I do understand Charlie’s confusion since I left my water mark of the original posting.

MP’s water mark: ( multiple miss typed words per paragraph) oops_sign
Author:  Michael Dale Payne [ Wed Feb 04, 2009 2:24 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
charliewood wrote:
Cool beans Michael - what surprises me is that you bought one of those units in advance of needing it for a job - thats forward thinking!!
Cheers
Charlie


I actually bought this two days after it first appeared on the web site months ago. having fussed with turn-buckel jacks in the past, I knew right then and there I wanted one or 50 of these :D
Author:  Jeffrey L. Suits [ Wed Feb 04, 2009 4:34 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
[/quote]

I actually bought this two days after it first appeared on the web site months ago. having fussed with turn-buckel jacks in the past, I knew right then and there I wanted one or 50 of these :D[/quote]

I've got a birthday coming up, and I am gonna treat myself to one of these...
Author:  TonyFrancis [ Wed Feb 04, 2009 4:39 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
I dont know about this tool. It just gives me the heeby jeebys. The design is flawed - pushing one thing closed by pushing another. Asking for trouble.
Author:  Michael Dale Payne [ Wed Feb 04, 2009 4:58 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
TonyFrancis wrote:
I dont know about this tool. It just gives me the heeby jeebys. The design is flawed - pushing one thing closed by pushing another. Asking for trouble.


And exactly what do you use if not a jack for loose brace and crack repair? A jack may not be the perfect answer but if you have done much loose brace repair it is a world better and more convenient than the typical screw or turn buckle jack that is the common tool use for this task.

In my repair last night there was very little pressure needed to align the crack. and the bottom of the jack did not set on the top plate it sat on a caul that span two braces. I have done my share of bridge plate and loose brace repair over the years. No you never want to push between the two plates if avoidable. But I never said I did.

In the dream world you never have to repair a brace glue joint or realign a grain line crack. but unfortunatly I don't live there.
Author:  TonyFrancis [ Wed Feb 04, 2009 5:05 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
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Author:  Michael Dale Payne [ Wed Feb 04, 2009 5:07 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
TonyFrancis wrote:
Rare earth magnets.


Yep in some areas where the brace is thin enough they work great but I have found that too oft if in th emeat of the brace that they don't close the opening but the biggest I have is half dollar round and maybe 1/8" thick.
Author:  jordan aceto [ Wed Feb 04, 2009 7:06 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
My shop got one of those right after it came out, and i love it more than my children. We have used it a bunch of times, gleefuly. Anyone thinking about getting one of these probably already has a whole pile of magnets, but there are some repairs that are just much harder to do with anything but the scissor jack.

I think back on all the annoying things i used to do, wedging bits of wood between braces like mini go bars, constructing little turnbuckle jacks, using mini quick grips turned inside out, they all suck compared to the scissor jack!
Author:  Evan Gluck [ Wed Feb 04, 2009 8:20 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
I use mine quite a bit and it is very well designed. I may start using it to lift the coffee cup to my lips when I am tired. :D
Best, Evan
Author:  TonyFrancis [ Wed Feb 04, 2009 8:36 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
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Author:  jordan aceto [ Wed Feb 04, 2009 9:40 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
TonyFrancis wrote:
Michael Dale Payne wrote:
TonyFrancis wrote:
Rare earth magnets.


Yep in some areas where the brace is thin enough they work great but I have found that too oft if in th emeat of the brace that they don't close the opening but the biggest I have is half dollar round and maybe 1/8" thick.


Michael,

I guess my problem with this tool is that it doesnt seem to address the real problem. Usually when a brace comes loose its not actually the brace that is loose - but the top/back from it. So usually its the top/back that has to be pulled to the brace and not vise versa. So if you do this with a jack like this one you can encounter big problems especially on fragile vintage instruments.

So if you cant use a regular clamp like for gluing bridges or a special repair clamp, the next best option is a rare earth magnet (or bunch of) mounted in a caul of some kind. You can use many at once where more pressure is needed, and there are many sizes and shapes available.

My critisim is not directed at you personally but at the inventors at StewMac. I love Stewmac and have a lot of their tools but half of that catalog is full of stuff you dont need, including the sissor jack.

Best,

Tony


When what you are talking about is an issue, i use the scissor jack to lightly snug up to the loose brace, and then use a clamp on the outside of the instrument, or magnets like you said, depends.

The scissor jack is NOT something i dont need, i love it.
Author:  Jeffrey L. Suits [ Thu Feb 05, 2009 11:17 am ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
"My critisim is not directed at you personally but at the inventors at StewMac. I love Stewmac and have a lot of their tools but half of that catalog is full of stuff you dont need, including the sissor jack."

There are more than a few Stewmac tools, that are solutions looking for a problem, but that scissors jack isn't one of them.
Author:  Chris Paulick [ Thu Feb 05, 2009 5:46 pm ]
Post subject:  Re: Finally got to use my new Stewmac sissor jack
Did you all get the StewMac Trade Secrets News Letter today? That's the subject.
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