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tangimango
08-19-2016, 01:10 PM
Aloha, would like to try adding black or white purfling around my rosettes. What size do you guys use or recommend? And where do you guys buy them from?

So far i found lmi website carrys them but not sure what size to get

Thank you

Kekani
08-19-2016, 03:01 PM
Seriously, depends on you. But that doesn't help much.

How about a reference? Here's .060 b/w/b around the .060 rosette. On paper it seems like a lot of purfling for very little rosette, but nobody's complained yet. For more reference, the binding purfling is 1/2 that size at .030 b/w/b.
93532

Hope this helps.

sequoia
08-19-2016, 07:11 PM
This is a question that bugs me too. I used to do thin rosette with thin purfling thinking it would look finer and now I'm doing thick rosettes (shell) with thick purfling and I think I like that look better. But I could change back.

Below earlier thin 3mm rosette with super thin purfling. Personally I think the look is too thin on a tenor uke.

93535

93536

Michael Smith
08-19-2016, 08:28 PM
I use .030 BWB purfling on the outside and inside of the rosette. There is method to the .030. If you use a .030 router bit to cut out your rosette you can at the same time cut out the actual rosette of wood, shell, or recon stone. Then the rosette will be the thickness of the router bit (.030) smaller on the inside and outside. Then you slip in the .030 BWB and it fits perfectly every time. You can even make a eccentric rosette this way with a shifting board to route the top and cut the rosette. It is always a good idea to have a black line where the rosette meets the wood as it will cover any slight misfit. So using a .030 black fiber woould work nicely as well. Also you never get any tear out with a small router bit like that.

Timbuck
08-19-2016, 09:58 PM
I dont buy bwb purfling any more I can never get exactly the sizes I require so I make my own
I buy 600 X 600 black and white ABS sheets at various thickness .25mm -1mm and slice off thin strips with my card cutting guillotine/office trimmer...and it works out a lot less expensive than buying the ready made stuff.
http://i219.photobucket.com/albums/cc143/shiregreenbod/trimmer_zpsed57cfbp.jpg (http://s219.photobucket.com/user/shiregreenbod/media/trimmer_zpsed57cfbp.jpg.html)

tangimango
08-20-2016, 12:43 AM
mahalos everyone. now i know which sizes to try, since there inexepensive.

tangimango
08-20-2016, 12:43 AM
now why didn't i think of this. i have a card cutter sitting on the shelf. hmmm thank you for the idea

I dont buy bwb purfling any more I can never get exactly the sizes I require so I make my own
I buy 600 X 600 black and white ABS sheets at various thickness .25mm -1mm and slice off thin strips with my card cutting guillotine/office trimmer...and it works out a lot less expensive than buying the ready made stuff.
http://i219.photobucket.com/albums/cc143/shiregreenbod/trimmer_zpsed57cfbp.jpg (http://s219.photobucket.com/user/shiregreenbod/media/trimmer_zpsed57cfbp.jpg.html)

Rrgramps
08-20-2016, 05:16 AM
I found these on AliExpress. They may be too wide for use with a multi-piece rosette, but should be ok used alone or as binding. Might even look fairly nice as two concentric rings, sans the filler. I do like the pearl filler in between the as in Sequoia's rosette. Michael's rosette is cool too.


100 strips violin inlay wood material strips /purfling materials (black+wthie+black) strip1.3x2.5mm thick; 970mm longPrice:US $16.99 / piece


Seeing how Ken has repurposed a card cutter for slicing his purfling, sounds like a good idea.

Kekani
08-20-2016, 10:21 AM
Not unlike Michael, there is some math logic involved with .060"

I used to install MOP or Abalone shell at .063" with the .060" purfling. Unlike Sequoia, I never really liked the look of fat shell purfling. I realized that even though I do inlays, I'm really minimalist in nature. Once I started doing my true radial wood rosettes, I decided to keep the same size.

By the way the math equals a 3/16" router bit for the rosette. One time around and I'm done.
Note: Yes, I use the same bit for soundhole, spaced appropriately of course.

On another note, the topic of the class I'm teaching at this year's Hawaii Ukulele Festival (that's the new name for the UGH Exhibition and conference) in November just so happens to be Tools and techniques for binding with purfling, or something like that.