Deprecated: Function mysql_numrows() is deprecated in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 333

Deprecated: Function mysql_numrows() is deprecated in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 333
<br /> <b>Deprecated</b>: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in <b>/home/bluescreek/domains/kitguitars/pm/db/db.mysql.php</b> on line <b>236</b><br /> <br /> <b>Deprecated</b>: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in <b>/home/bluescreek/domains/kitguitars/pm/db/db.mysql.php</b> on line <b>236</b><br /> <br /> <b>Deprecated</b>: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in <b>/home/bluescreek/domains/kitguitars/pm/db/db.mysql.php</b> on line <b>236</b><br /> <br /> <b>Deprecated</b>: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in <b>/home/bluescreek/domains/kitguitars/pm/db/db.mysql.php</b> on line <b>236</b><br /> <br /> <b>Deprecated</b>: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in <b>/home/bluescreek/domains/kitguitars/pm/db/db.mysql.php</b> on line <b>236</b><br /> <br /> <b>Deprecated</b>: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in <b>/home/bluescreek/domains/kitguitars/pm/db/db.mysql.php</b> on line <b>236</b><br /> Bridge Plate Repair

You are currently viewing Kit Guitar Forum archives. To view the current forums go to www.KitGuitarsForum.com/board



Log-in
Register
Members



Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236

Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/bluescreek/domains/kitguitars/pm/db/db.mysql.php on line 236
Bridge Plate Repair
Author
Post
ferp

Total Topics: 6
Total Posts: 45
Hi all,
I need to replace a bridge plate and I was wondering if anybody out there has done this with the box closed up? I went to Frets. com first but wouldn't cha know I just don't have an aluminum caul the shape of the bridge plate. Who'da thunk? I tried an iron but I'm kind of scared it will loosen the glue on the braces or lower tone bar so if anyone has a solution I'd appreciate it. I know it's a repair problem and not building situation but I also know there's a heck of a lot of knowledge here. Any help is, as always, greatly appreciated.

Harry

Jun 13, 09 | 5:22 am
Ken Hundley

Total Topics: 40
Total Posts: 2169
I have not tried this before, but what about just heating several small cheap thin putty knives? I have a small 2 quart hot pot, it heats or boils water within 2 minutes, or keeps it warm enough to drink. When I had to lift a bridge, I didn't heat the bridge, I heated 3 putty knives. When they are hot, the glue starts to separate fairly quickly. As they cool, they get harder to use, so you drop that one back int he pot and grrab the next. They never get hotter than the water boiling point, so they won't scorch the wood, and there is not enough ambient heat to loosen the braces or split the top. It's awkward to get in there, but it might work.

Jun 13, 09 | 11:09 am
Adaboy

Total Topics: 64
Total Posts: 509
Try using double stick tape to attach two small, identical scrape pieces of wood to your router base. Then place something over your soundboard to protect it.....like poster board etc. Then route then route teh brideg down as thin as you are comfortable routing it. I've read where some folks route off the entire bridge.....but I would have to be pretty comfortable with my setup to try that.

Anyhow, if you remove all the material you can it will require a lot less heat and your iron )or blanket) can probably be set at a lower temperature. Less heat for less time will lessen the chance of seperating the center seam......or damage the finish if the top is finished. I think that's what I would try.

Jun 13, 09 | 3:45 pm
Jim_H

Total Topics: 27
Total Posts: 212
Adaboy,

You realize he's just wanting to remove the bridge plate (Inside the guitar) and not the bridge itself? I also saw the post on OLF about routing a bridge down, but this was for someone who was replacing their bridge, not the bridge plate.

I suppose you could remove the bridge as well, as its glue joint may be compromised by heating and removing the bridgeplate.

I don't have any experience removing a bridge plate, although i have repaired one that was all chewed up from ball ends, using the scoop tool that stewmac sells (pretty pricey).

Hopefully Rick Davis or John Hall will chime in here with a suggestion or three.

Jun 13, 09 | 4:59 pm
ferp

Total Topics: 6
Total Posts: 44
Adaboy, thanks for the suggestions but like Jim H said I want to remove the plate underneath. I already have the bridge off. That much I wasn't afraid to do with an iron. I just used a thin putty knife and worked it while the iron was heating. That way once the heat had the glue softened, the putty knife was already working it's way in.
Ken, I'll have to hit the five and dime and look for a hot pot. That sounds like it might work just fine. Thanks.

Harry

Jun 14, 09 | 1:54 am
Ken Cierp

Total Topics: 58
Total Posts: 2262
Hi Harry,

Getting the glue softened as you know is the key to removing that plate with out damaging the soundboard, plus the gluing surface must be relatively chip free after removal. To that end, heating the plate from the inside has been the procedure of choice for repair persons ---- as described in the Frank Ford article an aluminum plate holds the heat long enough for this purpose. I have to admit his gadget is fairly complex. As an alternate, perhaps you could get a look at Don Teeter's volume two repair manual. He has illustrations of the two tools he designed for the purpose of bridge plate removal. One is like a little crowbar and the other is his simplified heat transfer plate.

Ken

Kenneth Michael Guitars est. 1978

Jun 14, 09 | 4:57 am
Running Dog

Total Topics: 1
Total Posts: 103
I think of removing the bridge plate on a finished guitar as an advanced repair problem. It's a key element both structurally and tonally, and it's a bear to get to. Are you sure it needs replacement? Normally, only broken and badly deformed plates have to be replaced, and then you usually have some brace repair to do too. It may be easier to remove the top and do all the work where you can see what you're doing.

What Ken Cierp said is helpful -- it's no big deal to score a chunk of aluminum and bandsaw it to shape. Mine has a small knob screwed to it so I don't burn my fingertips (just my knuckles). I made a chisel/palette knife thingie out of an old putty knife by heating and bending the blade into a U (so I can get under the plate from behind and pull on the knife). Sharpen it so the flat part will ride on the soundboard and the tapered side will be against the plate. Round the corners and then polish it so it's slick!

Work slowly, using moderate heat. If there's any change in the finish on the top, it's getting too hot. Expect to have tired hands by the time you're done. This one ain't easy. Good luck!

Jun 14, 09 | 10:00 pm
ferp

Total Topics: 6
Total Posts: 44
Thanks guys. What actually occured is that when I built it (LMI dreadnaught) I put the bridge plate where it should be according to the plans, but the plate didn't cover where the peg holes came through. I tried putting another plate next to it and another on top of it. Needless to say after breaking a couple strings at the ball end I figured the plate was too thick. I tried Ken Hundley's hot pot suggestion but I couldn't get at the plate without holding the blade of the putty knife and that was too hot to handle. I went to a local big box store and bought a small travel iron. I'm hoping to be able to heat it from the top and miss the bracing and tone bars. Think this approach would work. I wouldn't mind learning some repair work so I will order the Don Teeter books.
Besides, what better place to learn than on one I built. LOL. I do everything with hand tools so I have no band saw or anything like that. (Well, except a lam trimmer.) Could use a hack saw on the aluminum though. Food for thought. Hey, thanks again. Bailed out by the forum once again!!!!

Harry

Jun 15, 09 | 1:32 am
Freeman

Total Topics: 27
Total Posts: 668
Harry, I have had the heavy rosewood bridge plates replace on both my old Martins (I didn't do it myself) and while it is an "advanced" repair technique it really isn't out of reason. Here is what Bryan Kimsey says about it

http://www.bryankimsey.com/music/rates.htm

and here is a little bit more info, but doesn't show the actual proceedure

http://www.bryankimsey.com/bridges/index.htm

I'm pretty sure he uses some curved chisels that he can scrape as he pulls towards the soundhole.

Jun 15, 09 | 8:47 am
Ken Cierp

Total Topics: 58
Total Posts: 2262
I certainly agree with Brian Kimsey when he says

"this is easily the most risky job I perform"

Its that reaching inside and working blind has hazards, plus adding the heat component and as Rick points out the hand fatigue. Not "doomsdaying" --- but this is truly an advanced repair procedure ---- "expect the unexpected"

Ken

Jun 15, 09 | 9:04 am
Adaboy

Total Topics: 64
Total Posts: 509
Yes, I misread the question. Sorry about that Jim. Good luck with the repair and let us know how it turns out.

Jun 15, 09 | 9:18 am
Ken Hundley

Total Topics: 40
Total Posts: 2169
Yeah Harry, I haddn't thought of how you would hold them once they're hot.....lol. Like I said, "I have not tried this before....", and I'll be sure not too. Thanks for experimenting....;)

Jun 15, 09 | 10:07 am
Freeman

Total Topics: 27
Total Posts: 668
I'll just add that Bryan did modify both of my old Martins and it made a tremendous difference (when the D18 came home my wife's comment was "you are playing louder tonight"). He also included a little baggie in the case with each guitar filled with wood shavings - I said to myself "that used to be my bridge plate". Note, he does not try to remove them intact.

Jun 15, 09 | 10:25 am
Kevin Sjostrand

Total Topics: 84
Total Posts: 981
Chiseling off the plate certainly sounds like the safer way to go, but I can imagine still not easy to do. My hands are so big I can barely get one through a soundhole; can't imagine having to manipulate a chisel, or a putty knife in there. But I would vote to try chiseling it off.

Kevin

Jun 15, 09 | 11:35 am
Running Dog

Total Topics: 1
Total Posts: 103
I forgot to mention that the heating caul gets clamped in place! Heat it (hotplate, torch, whatever), get it in place, then use a long C-clamp to hold it. Wait until the top is warm or the caul cool, whichever comes first.

The most common issue is digging into the soundboard; sometimes coming through the soundboard! If the glue is nice and warm and your chisel/knife properly sharpened, the likelihood of this is less -- but it's the biggest problem. Work slowly, keep the glue warm and soft, be smart about it.

Again, good luck! Remember: you can always make a new soundboard!

Jun 15, 09 | 1:40 pm
ferp

Total Topics: 6
Total Posts: 44
Well guys, another experiment I thought of to try. I'm using Ken Hundley's hot pot along with Rick Davis' bent putty knife (a couple of cheap ones) and see if I can't heat the bent putty knives and that way I should be able to use the handles and not burn my delicate little digits. I won't get to try it until the weekend probably but I'll be sure to let you all know how it turned out. I don't mind refinishing it if I have to. It came out pretty ugly anyway. I have a bearclaw top and used orange shellac. Not a good combination. LOL But then it's all a learning experience isn't it?

Harry

Jun 16, 09 | 1:21 am



Deprecated: Function eregi() is deprecated in /home/bluescreek/domains/kitguitars/pm/lib/member.fns.php on line 2298

You must be a registered and logged in member to post in this forum