|
Post by dnic on Jul 31, 2014 21:09:03 GMT -6
Alright so I've been working on an acoustic guitar, back burnered really. one reason for this is that I want to use a radius dish for curving braces and gluing them to the back. And also for shaping the edges where the back connects to the sides. So here's some pics of the process or the pieces of the process. First I just used a corner of my table saw table and built from there. Attachments:
|
|
|
Post by dnic on Jul 31, 2014 21:10:27 GMT -6
Next I built the radius runners the router will ride on. Note the center pivot stud. Attachments:
|
|
|
Post by dnic on Jul 31, 2014 21:17:43 GMT -6
This 3/4" double sided melamine with wax is acting as a lazy Susan. The extra thickness also saved me from needing a longer router bit. Attachments:
|
|
|
Post by dnic on Jul 31, 2014 21:24:01 GMT -6
I built a base to support the router over the dish. And added the end pieces to capture the runners to minimize twist and run square to the world. The in this pic it already had one pass and I did a second and took a whisker off just to be really clean. Attachments:
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jul 31, 2014 21:29:11 GMT -6
that's pretty cool! EB
|
|
|
Post by dnic on Jul 31, 2014 21:29:50 GMT -6
So, spin the disc with one hand and advance the router with the other. With the 4" dust collector hose right there I had very little lost dust. The finished dish. I will still at some point make a 20' radius this one is a 15'. I'll just have to make new runners. Attachments:
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 1, 2014 10:02:50 GMT -6
Looks like it's working out... I like playing around with jigs and coming up with things to help me out in the shop. Some things work out really good and some not so much. But it's fun to experiment!
EB
|
|
|
Post by dnic on Aug 1, 2014 17:51:20 GMT -6
I'll post some pics of shaping the body when I get there to show the concept.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 2, 2014 11:57:37 GMT -6
Cool deal. I hope it all works out. I love it when a plan works out! EB
|
|
|
Post by dnic on Aug 21, 2014 19:07:32 GMT -6
Ok, so I did sand the back side edges of the guitar. Just saw that I promised pics. Sorry that didn't happen. However the dish worked as hoped for and created a perfect radius for the back to nest in. Also used the dish to radius the braces and also glue them.
Now here's the rub, the radius turned out much to tight. That is to say it's less than a 15' radius somewhere around half maybe 7.5. So I'm wondering where I wrong, every way I look at it, it should work. But it didn't. Any ideas?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 21, 2014 19:12:59 GMT -6
I would guess it's in the ark of the radius. The geometry is off... That's my guess...
EB
|
|
|
Post by dnic on Aug 21, 2014 19:58:32 GMT -6
Nope it's a 15' radius but the braces that fit the dish perfectly don't match the radius on the sled I used to make the dish. Weird poop.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 21, 2014 20:26:05 GMT -6
Hum.... wood movement? You got me... EB
|
|
|
Post by hoz on Sept 4, 2014 15:58:59 GMT -6
Did the router bit drop during the dishing? The best of my math skills tells me the tip of the router should move the same curve as the router base.
|
|
|
Post by dnic on Sept 4, 2014 18:19:06 GMT -6
Hoz, I'll have to check that if I haven't reset that router yet. But the bottom of the dish would have a point I think. This seems to flow well just at a greater radius. It messed with my mind but I went ahead and used that radius for my guitar back. Who knows I may accidentally find a better tonal trick.
|
|