New f-hole flattop

Show us how your current project is progressing
Dave Bagwill
Posts: 5951
Joined: Tue Dec 13, 2011 7:44 pm

Re: New f-hole flattop

Post by Dave Bagwill » Fri May 31, 2013 10:21 am

Well, if I'd know you wanted to see that really severe selmer bend, I would have....no, I wouldn't. Sorry..:-)

If I ever do try it, I will use two inside lams of .025", then thin the outside to .040" and give it a try. If I can find some cheap practice sides, I will attempt it and post the results. The .025's will do the bend easily, and the .040, if soaked in super soft for a night, should not be a problem either.

As you know, one of the advantages of the Florentine cutaway is that it does NOT try to pull the rims out of shape, and there is no built-in tension to deal with.
-Under permanent construction

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

Re: New f-hole flattop

Post by Dave Bagwill » Fri May 31, 2013 10:44 am

A question just for informational purposes - on this instrument I've decided on a 4" height at both the head and tail blocks. I used the method from KMG to draw the side profile using the 15' radius bar and, as one would suspect, except for a small rise at the waist area - the rim height goes from 4" then gradually to 4 3/16" then gradually back to 4" - there is not much of a profile.
Question for the future - because we are dealing with such a small rise, is it necessary to even have that rise?
-Under permanent construction

Kevin in California
Posts: 2798
Joined: Mon Dec 19, 2011 4:19 pm

Re: New f-hole flattop

Post by Kevin in California » Fri May 31, 2013 12:39 pm

Looking good Dave, most interesting to watch.

Kevin

ken cierp
Posts: 3924
Joined: Tue Dec 13, 2011 11:23 pm

Re: New f-hole flattop

Post by ken cierp » Fri May 31, 2013 12:57 pm

Question for the future - because we are dealing with such a small rise, is it necessary to even have that rise?
You bet it is!! or else:

viewtopic.php?f=15&t=1159

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

Re: New f-hole flattop

Post by Dave Bagwill » Fri May 31, 2013 2:03 pm

Just a little kerfing duty this morning.

What I like about my 'BBQ' set-up is that I can glue on one side worth's of kerfing, then turn it on the spit and see if there are any gaps, or squeeze-out to be cleaned up, and it is nice and accessible. Then another side, turn and inspect, etc.

I use the adjustable pvc and cork pads to keep the body at the correct length.
Attachments
DSC00836.JPG
DSC00836.JPG (206.3 KiB) Viewed 547 times
DSC00835.JPG
DSC00835.JPG (109.12 KiB) Viewed 547 times
-Under permanent construction

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

Re: New f-hole flattop

Post by Dave Bagwill » Fri May 31, 2013 8:20 pm

Kerfing finished, side supports glued in.
The first pic shows that I was not concerned about the cracks or gaps, because I was going to laminate a continuous thin strip of mahogany onto the kerfing, giving it a smooth and finished look. It took an extra 10 minutes or so, but I like the look. The strips were just lightly clamped to the kerfing, then a thin drizzle of CA got it nice and tight.
Still need to clean the rim up a bit, then on to the radiusing of the rim.
Attachments
DSC00837.JPG
DSC00837.JPG (74.37 KiB) Viewed 542 times
DSC00838.JPG
DSC00838.JPG (200.6 KiB) Viewed 542 times
DSC00840.JPG
DSC00840.JPG (179.62 KiB) Viewed 542 times
DSC00841.JPG
DSC00841.JPG (193.59 KiB) Viewed 542 times
-Under permanent construction

John Parchem
Posts: 2746
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
Contact:

Re: New f-hole flattop

Post by John Parchem » Fri May 31, 2013 10:12 pm

Looking great! Really nice work.

Post Reply