Pinless bridge procedure please

Ideas for (DIY) shop made tools -- save money and add to the enjoyment
John Parchem
Posts: 2750
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
Contact:

Re: Pinless bridge procedure please

Post by John Parchem » Wed Apr 21, 2021 5:00 pm

Put a couple guides for a router on a jig that can securely hold the bridge parallel to the guides. Position the bridge route a slot, move the bridge to the next position route a slot and repeat until done

Carl Dickinson
Posts: 152
Joined: Thu Jun 28, 2018 2:36 pm

Re: Pinless bridge procedure please

Post by Carl Dickinson » Wed Apr 21, 2021 7:06 pm

John's suggestion would also allow for bit changes to better match the string diameters. I think I'll try that too.
Here's some pics of how the sides were trimmed. The two mold halves clamped together and the side clamped tight. The last picture is a little blurry 'cause of the running tool in one hand and the phone in the other. :lol:
IMG_20200730_165239_1.jpg
IMG_20200730_165239_1.jpg (43.75 KiB) Viewed 1565 times
IMG_20200730_165324_0.jpg
IMG_20200730_165324_0.jpg (39.72 KiB) Viewed 1565 times

Dave Bagwill
Posts: 5951
Joined: Tue Dec 13, 2011 7:44 pm

Re: Pinless bridge procedure please

Post by Dave Bagwill » Thu Apr 22, 2021 1:03 am

I wonder if the string diameter has anything to do with the slot width? I'm making all the slots the same.

I've had trouble using the router for this - I probably need a different bit. John mentioned an 'end mill' and what is that?
-Under permanent construction

Dave Bagwill
Posts: 5951
Joined: Tue Dec 13, 2011 7:44 pm

Re: Pinless bridge procedure please

Post by Dave Bagwill » Sat Apr 24, 2021 2:17 pm

Ok, worked out the kinks and have a repeatable procedure. Here's one out of granadillo, which I love working with - great aroma, and has that 'used' but rich look of old wood.
8* slope of the saddle slot.
Attachments
DSC00140.JPG
DSC00140.JPG (107.81 KiB) Viewed 1545 times
DSC00142.JPG
DSC00142.JPG (125.51 KiB) Viewed 1545 times
DSC00143.JPG
DSC00143.JPG (118.13 KiB) Viewed 1545 times
DSC00144.JPG
DSC00144.JPG (82.61 KiB) Viewed 1545 times
-Under permanent construction

Dave Bagwill
Posts: 5951
Joined: Tue Dec 13, 2011 7:44 pm

Re: Pinless bridge procedure please

Post by Dave Bagwill » Sat Apr 24, 2021 2:19 pm

Documented it because I forget stuff :-(
Attachments
bridge specs.png
bridge specs.png (46.13 KiB) Viewed 1544 times
-Under permanent construction

John Parchem
Posts: 2750
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
Contact:

Re: Pinless bridge procedure please

Post by John Parchem » Sat Apr 24, 2021 3:30 pm

That looks good!

Carl Dickinson
Posts: 152
Joined: Thu Jun 28, 2018 2:36 pm

Re: Pinless bridge procedure please

Post by Carl Dickinson » Sat Apr 24, 2021 11:09 pm

Thanks, Dave! I'll try that soon.

Post Reply