***** Guitar Project Jigs, Tools & Techniques Online Resources Archives OLF Video Page Library of plans MP3 Library Inlay Class
Offical Luthiers Forum





And our community proudly sponsored by:

RC Tonewoods | Stewart MacDonald | LuthiersForum
TasmanianTonewoods | OLF | OLF MERCH
Luthier Suppliers | Pacific Coast Woods | ELEVATE
OLF X | Tasmanian Acoustic Tonewood | Luthiers Forum Store!
Luthiers Forum | OLF Facebook | AVAIL SPACE
OLF | Alaska Specialty Woods | A.Hix Tonewood
Duke of Pearl | Birkonium CNC | Space




Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Wed Nov 27, 2024 5:22 am


Board index » Fixture, Video and Picture Tutorials

All times are UTC - 5 hours





Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 
  Print view Previous topic | Next topic 
Author Message
Kbore
PostPosted: Fri May 03, 2024 12:00 pm 
Offline
Koa
Koa

Joined: Thu Jan 11, 2018 9:19 am
Posts: 529
Location: St. Charles MO
First name: Karl
Last Name: Borum
State: MO
Zip/Postal Code: 63303
Country: United States
Focus: Build
Status: Amateur
Do you guys have an alternative plastic caul for round foot of sound hole clamps? I can’t justify $6 each…

_________________
Measure Twice,

Karl Borum
Top
 Profile  
 
Jim Watts
PostPosted: Fri May 03, 2024 1:54 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2968
Location: United States
Why wouldn’t you just use a scrap of wood? You could even glue some cork or felt to it iif you wanted.

_________________
Jim Watts
http://jameswattsguitars.com


These users thanked the author Jim Watts for the post: Kbore (Fri May 03, 2024 2:59 pm)
Top
 Profile  
 
Kbore
PostPosted: Fri May 03, 2024 3:03 pm 
Offline
Koa
Koa

Joined: Thu Jan 11, 2018 9:19 am
Posts: 529
Location: St. Charles MO
First name: Karl
Last Name: Borum
State: MO
Zip/Postal Code: 63303
Country: United States
Focus: Build
Status: Amateur
Hey Jim!
Cork doesn't stay put when I glue it onto the metal cup. Might hold better if it wasn't void of material in the center. Guess I could cut some HW circles with a hole saw and inlet them on one side to fit over the foot of the clamp- thanks, that's a great idea!

_________________
Measure Twice,

Karl Borum
Top
 Profile  
 
Jim Watts
PostPosted: Fri May 03, 2024 4:58 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2968
Location: United States
Hey Karl! I must be missing something, does it really need to be attached to the clamp? Can't it just sit between the top and the clamp to protect the top?

_________________
Jim Watts
http://jameswattsguitars.com


These users thanked the author Jim Watts for the post: Kbore (Sat May 04, 2024 7:37 pm)
Top
 Profile  
 
rbuddy
PostPosted: Sat May 04, 2024 12:03 pm 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Sun Jun 02, 2013 8:16 am
Posts: 485
First name: Brian
City: U.P.
State: Michigan
Focus: Build
Show a pic of your clamps Karl.

I've used plastic furniture "feet" that slide over chair legs.

Or cane tips, there's all kinds of plastic rod tips. Sometimes you have to cut them down a bit.

I've glued leather to c-clamps with contact cement and it's stayed there for decades.

_________________
Brian R, Wood Mechanic
N8ZED


These users thanked the author rbuddy for the post: Kbore (Sat May 04, 2024 5:42 pm)
Top
 Profile  
 
Kbore
PostPosted: Sat May 04, 2024 6:06 pm 
Offline
Koa
Koa

Joined: Thu Jan 11, 2018 9:19 am
Posts: 529
Location: St. Charles MO
First name: Karl
Last Name: Borum
State: MO
Zip/Postal Code: 63303
Country: United States
Focus: Build
Status: Amateur
These are StewMac soundhole clamps. The foot of the clamp has a hole in the center for the attaching screw. Cork works for one or two times. Pic with three clamps, shows the remains of cork down in the heads of the screw. Now looking at it, the screw head likely helps tear up the cork. Leather would be much better than cork. These feet are small (1/2" dia) and don’t have much area to spread a clamping load, and the center is not supported either.

SM sells a snap on (that really be included) that increases the area and covers the center.

Jim, I’m referencing the foot on the bottom side, which would be the inside of the guitar, it’s easy to add a caul on the top.


You do not have the required permissions to view the files attached to this post.

_________________
Measure Twice,

Karl Borum
Top
 Profile  
 
Jim Watts
PostPosted: Sat May 04, 2024 7:41 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2968
Location: United States
Got it, thanks that makes more sense to me. I can be kinda dense sometimes!

_________________
Jim Watts
http://jameswattsguitars.com


These users thanked the author Jim Watts for the post: Kbore (Sat May 04, 2024 10:06 pm)
Top
 Profile  
 
Jim Watts
PostPosted: Sat May 04, 2024 8:20 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2968
Location: United States
If I’m not vacuum clamping a bridge on I tape a shaped caul underneath the sound board and clamp against that. Just remember to remove it when you’re done!

_________________
Jim Watts
http://jameswattsguitars.com


These users thanked the author Jim Watts for the post: Kbore (Sat May 04, 2024 10:06 pm)
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Board index » Fixture, Video and Picture Tutorials

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 9 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com