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Discussion in '2015 TDPRI GSM Build Challenge' started by Guitar novice, Jun 11, 2015.
Wow, looking awesome!
Looking great! Love following along with this one.
GuitarNovice that is really building a guitar.
( I've only ever done a stewmac kit).
Feels like i'm making the kit.
Thanks Jared. Yours is coming along nicely. I'm absolutely fascinated on your build. I have no idea what to expect next.
Cheers for that. No "features" yet.
Mini update. Snuck 30mins in before I have to run the kids to school.
Back bracing shaping..
First I mark out the braces a reference point. 2 inches inside the edge for the top 2 braces and 2.5 inches for the bottom 2 braces. I also mark about 2mm above the back where the brace meets the edge of the guitar.
Plan is to plane the edges down so it's a straight line from the reference point and about 2mm above the soundboard.
I put a bit of packing under the far edge of the guitar to provide support. The back is now curved so this packing reduces the chance of cracking.
One done. 7 more to go. Have to do that after work today.
Lots of fun to watch. Thank you for taking the time to share!
Not sure what is harder
1) The build
2) keeping it logged on here
3) following everyone else's build
#3 for certain...
Love what you've done so far... It looks so cool, but I couldn't play a guitar that had a face in it. I'd constantly feel as though it was watching me and making faces while I played, and I don't need my guitar of all things being a critic.
I love the wood and the work you've done. Excellent jigs. keep it going!
Thanks for the encouragement guys.
I left work earlier today to sneak some more time in.
Continued with getting the ends of the back braces down to about 2mm at the ends. The trick with this is start at a sharp angle and then slowly flatten the plane.
All ends are done.. time for next step,.
I need to shape the sides of the braces. I use low tack masking tape to protect the back.
A centerline is marked on the 2 top braces. I hold the plane at a high angle and shape to the middle.
Here is one side done.
Both sides done
The back braces are shaped differently. You want to use the plane to take the sharp edges off.
The main part is done. Will tidy up with some hand sanding now.
Final sanding is done. Started with 120 grit and then did 240 grit. I wanted to use 180 grit but didn't have any. Looks ok but i'll have another look before I put the back on.
Anyone care to share what they do for their sanding routine?
Happy with the way the shaping comes up.
As much as possible the back will live in the dish until it is connected to the sides. The dish provides support and tries to keep that arch.
Next up is to make the kerfing.
edit: I think I might scallop the ends of the back braces but i'll think about that over night.
That is really looking great Matthew!!!
Thanks. So far so good (better than expected). No features made yet!
Hard to keep up this momentum... I'm putting a lot of hours into this and I still have this feeling that time is my enemy.
Ok so time to make some kerfing.
First up was to cut 2 lengths of kerfing to width. These are cut so it's 5mm by 15mm.
I've got a new fence on the bandsaw. Seems to make this sort of stuff much easier than the old fence.
I cut some extra lengths to spare but 2 of them instantly got a curve in them. I assume that's because there was tension in the timber. I won't use those pieces.
The bend shows in this photo
Next I clamp a piece down and attack it with the block place. I'm aiming for a almost rounded triangle (not sure if that makes sense but it's clear in my mind)
I follow that up with sandpaper. Here is a progress shot.
Then it's off to the bandsaw. First problem was that the bandsaw is against the wall and I didn't have enough room. Fortunately I have most of my tools on wheels. Move it out and good to go.
With the design help of fellow aussie Davecam I made a little jig for the bandsaw. It works brilliantly and quite simple to put together.
Very happy with the end result.
Will check humidity now and work out whether to glue the kerfing in or wait for tomorrow.
Last update for tonight. Got a fair bit of progress.
Humidity was ok for gluing but I needed to make another kerfing strip and by the time that was done I felt I should do it when a bit fresher.
I did do a dry run of the kerfing. No snaps which i'm happy about (not that it makes any difference). I'll leave it as a dry run for now.
That's it for now. Hope everyone's build is going well. Apologies for not following them as much as I would like (seems to be that way every year I build).
Very nice work so far!
I think I drooled on your tools
Going brilliantly Matt! I like the idea of a dry run with the kerfing. I have done it the same way several times but have also soaked it prior to clamping into the mould to cook overnight, it makes it so much easier to fit up when you do it for real. If you pre-shape the kerfing on the actual sides in the mould, that could cause problems with the moisture but some plastic wrap should overcome that. Excellent building!!
Glad to see the mandatory rubber band on the kerfing guide, simple always seems to work best!
This build is looking fantastic Matt!
Very small update.
I got up early and glued in the kerfing. Not much to report but a couple of little tricks I was told. Always start the kerfing at the neck end. When people hear it's a hand made guitar they are invariably going to look in the sound hole. If you start at the neck you can get it nice and tight up against the block. If the back is slightly out it will never be seen. Mine was pretty good at both ends so happy.
Glue being used in the entire guitar is titebond.
Sides ready to go.
The kerfing is set a little proud of the sides. Later an angle will be put on the kerfing so that it matches the shape of the back. This makes a better gluing surface.
Fairly clean glue up
This side had a bit more squeeze out. Clean up as much as I can. A lot of this you can't see but it's good to make it perfect wherever possible.
Kerfing glued in. I used a couple of quick clamps where extra pressure was needed. I want the kerfing to be hard up against the side.
I couldn't do anymore as I was 10mins late for work (didn't even get time to post this)
Not expecting to get much done tonight. I have a 1hr guitar lesson which usually goes over 2.5hrs and a bottle of wine so that may slow down the build progress.
If I get a chance i'll scallop the back braces a bit.