Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Sat Nov 30, 2024 6:04 am


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 12 posts ] 
Author Message
PostPosted: Wed Aug 13, 2008 9:25 am 
Offline
Contributing Member
Contributing Member

Joined: Sat Aug 25, 2007 2:05 am
Posts: 685
Location: Saint Petersburg, Florida
First name: Glenn
Last Name: LaSalle
City: Saint Petersburg
State: Florida
Status: Amateur
Hi,

I had some time in the shop yesterday and this morning, and was able to complete my 1st rosette (figured Sycamore, with b/w/b). I certainly learned alot from this! I had a few problems:

- Cutting out the rosette:
Attachment:
Rosette Circle Jig.jpg


- Routing out the channel using the circle cutter jig I got from Sylvan - what a pleasure it is to use!!:
Attachment:
Rosette Channel Cut.jpg


- Dry fitting - I did this a bunch of times, and it was great to do ... however, i learned when the glue is in the channel, it is harder to do:
Attachment:
Rosette Dry Fitted.jpg


- Scraped and sanded to 220. I have a few small gaps that i need to address. Also, while having the glue in the channel, the outside purfling snapped as I was trying to fit it (it doesnt move around as well with the glue in the channel (LMI White). You can see it on the bottom towards the left:
Attachment:
Rosette Sanded 220.jpg


All in all, I was pretty happy with the results for my 1st - but I could have kicked myself when the purfling broke - glue was already beginning to set.

Thanks for looking!

Glenn


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


Top
 Profile  
 
PostPosted: Wed Aug 13, 2008 10:28 am 
Offline
Contributing Member
Contributing Member

Joined: Sat Aug 25, 2007 2:05 am
Posts: 685
Location: Saint Petersburg, Florida
First name: Glenn
Last Name: LaSalle
City: Saint Petersburg
State: Florida
Status: Amateur
glasalle wrote:
- Scraped and sanded to 220. I have a few small gaps that i need to address.


I forgot to ask my question :-). What would be the best method to fill in the gaps? Their are 2 that arent too bad, but I would like to fill in the gaps - should i fill with sycamore dust and wick in some glue?

Thanks!

Glenn


Top
 Profile  
 
PostPosted: Wed Aug 13, 2008 10:47 am 
Offline
Old Growth Brazilian Rosewood
Old Growth Brazilian Rosewood
User avatar

Joined: Fri Nov 02, 2007 9:49 am
Posts: 13390
Location: Ann Arbor, Michigan
First name: Hesh
Last Name: Breakstone
City: Ann Arbor
State: Michigan
Country: United States
Status: Professional
Your rosette looks great Glenn my friend. [:Y:] [clap] [clap] [clap] [clap]

There are lots of ways to fill gaps but if it were me and I had used LMI White I would continue to use LMI White and dust and avoid CA.

What I do is squeegee some glue into the gap with my finger and then sand with 120 tri-folded paper a few strokes in the direction of the gap. This helps keep the dust that will result from sanding more on the side of the gap that the dust came from. Typically repeating this once or twice and the gap is filled.


Top
 Profile  
 
PostPosted: Wed Aug 13, 2008 11:22 am 
Offline
Cocobolo
Cocobolo

Joined: Wed Aug 02, 2006 7:31 am
Posts: 174
Location: Leucadia, CA
First name: Dean
Last Name: Bayles
City: Leucadia
State: CA
Country: USA
Focus: Build
Status: Amateur
Why not re-rout and replace with a slightly larger purfling. Kill to birds...... new unbroken purf and no more gaps.

_________________
Dean


Top
 Profile  
 
PostPosted: Wed Aug 13, 2008 12:08 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sat May 17, 2008 1:11 pm
Posts: 2375
Location: Spokane, Washington
First name: Pat
Last Name: Foster
Country: USA
Focus: Build
You might be able to reduce the visibility of the break with a little piece of purfling, but if it were my first, I'd leave it. It will be under the strings, and the top will be on the guitar, so it won't be nearly as prominent in your mind or visually when you're done with it as it is now. Plus, it will be under the strings. By the time you start your #2, you'll have nearly forgotten all about it!

Pat

_________________
formerly known around here as burbank
_________________

http://www.patfosterguitars.com


Top
 Profile  
 
PostPosted: Thu Aug 14, 2008 3:14 pm 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Thu Jan 31, 2008 12:31 am
Posts: 326
Location: New York City
First name: Ron
Last Name: Y
Hesh wrote:
Your rosette looks great Glenn my friend. [:Y:] [clap] [clap] [clap] [clap]

There are lots of ways to fill gaps but if it were me and I had used LMI White I would continue to use LMI White and dust and avoid CA.

What I do is squeegee some glue into the gap with my finger and then sand with 120 tri-folded paper a few strokes in the direction of the gap. This helps keep the dust that will result from sanding more on the side of the gap that the dust came from. Typically repeating this once or twice and the gap is filled.


Hi Hesh,
At what point would you fill in the gaps, during final sanding with 220 or before the initial sanding? I figure that a lot of sanding could open the gaps again. Thanks

By the way Glenn, that is a very nice first rosette.


Top
 Profile  
 
PostPosted: Thu Aug 14, 2008 4:04 pm 
Offline
Contributing Member
Contributing Member

Joined: Sat Aug 25, 2007 2:05 am
Posts: 685
Location: Saint Petersburg, Florida
First name: Glenn
Last Name: LaSalle
City: Saint Petersburg
State: Florida
Status: Amateur
Thanks Ron.

Actually, I was wondering the same question. I have already sanded to 220. I have half the gaps filled, but the other gaps are very narrow - the LMI glue just doesnt fit in the gaps. I have been using my finger to try to force in the gap, then sprinkling the sycamore dust into the gap. Most of this is getting sanded out when i sand. Overall, however, the gaps are very minimal ...

Glenn


Top
 Profile  
 
PostPosted: Thu Aug 14, 2008 5:03 pm 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Thu Jan 31, 2008 12:31 am
Posts: 326
Location: New York City
First name: Ron
Last Name: Y
glasalle wrote:
Thanks Ron.

Actually, I was wondering the same question. I have already sanded to 220. I have half the gaps filled, but the other gaps are very narrow - the LMI glue just doesnt fit in the gaps. I have been using my finger to try to force in the gap, then sprinkling the sycamore dust into the gap. Most of this is getting sanded out when i sand. Overall, however, the gaps are very minimal ...

Glenn


I also have some gaps in my wood rosette. So far I only sanded with 120 grit. I've been using a modified version of Hesh's gap filling technique like you Glenn by applying the glue, wiping off the excess, and then sprinkling the dust in. But if i do a lot of sanding afterwards, the gap opens up again. This happened where the sides meet the back plate.

ron m.


Top
 Profile  
 
PostPosted: Fri Aug 15, 2008 8:00 am 
Offline
Contributing Member
Contributing Member

Joined: Sat Aug 25, 2007 2:05 am
Posts: 685
Location: Saint Petersburg, Florida
First name: Glenn
Last Name: LaSalle
City: Saint Petersburg
State: Florida
Status: Amateur
ToddStock wrote:
Re: fills around the rosette - seems like minor gaps (a few thou) between the soundboard and the purfling disappear with lacquer. These can settle a bit over time, but drop fill early can minimize the effect. For gaps between purfling and the darker material of the rosette, a Z-Poxy or CA fill is a good bet, provided it is applied evenly, although CA can bleed if things are not well sealed.


Thanks Todd. I was planning on trying FP for my first finish (when I get to that stage). Does the same hold true for FP?

Question re: z-Poxy. I was also planning on z-Poxy to fill - i was wondering (and i think you answered that) if I should z-poxy the rosette on top? I wasn't planning on Z-Poxying the top ( i think i read where some folks do this).

Thx!

Glenn


Top
 Profile  
 
PostPosted: Sun Aug 17, 2008 9:00 am 
Offline
Walnut
Walnut

Joined: Sun Aug 17, 2008 3:55 am
Posts: 10
Location: Parkville, MO
I often use solid wood rings or tiles. I found a long time ago it is much easier and the results are cleaner to inlay the veneer rings last. Seal the channel and the surrounding area with shellac, dry fit the veneer lines, douse in CA, level with a scraper, done.

_________________
Ken Whisler, guitarist and luthier


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: Colin North and 39 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