Official Luthiers Forum!
http://luthiersforum.com/forum/

cutting rosette channel by hand, any thoughts/tips?
http://luthiersforum.com/forum/viewtopic.php?f=10101&t=32803		 Page 1 of 1
Author:  Tai Fu [ Sat Jul 09, 2011 2:50 am ]
Post subject:  cutting rosette channel by hand, any thoughts/tips?
I found some micro-chisels and thought of cutting rosette by hand. So I got a circle scriber (a circle cutter with a blade on it) and some 1.5 and 3mm chisels. I did a practice run on a piece of flat sawn spruce. The circle scriber kind of jumped a bit when it encountered the grain, and the cut at first wasn't so smooth, so I did the channel with the bevel against the wood and it worked better.

Anyone care to share some more tips on cutting rosette channel by hand?
Author:  wbergman [ Sat Jul 09, 2011 6:10 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
I'm not sure what you mean by micro chisel, but my limited experience is that a small, but not "micro" chisel is easier to handle.
Author:  Tai Fu [ Sat Jul 09, 2011 6:16 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
wbergman wrote:
I'm not sure what you mean by micro chisel, but my limited experience is that a small, but not "micro" chisel is easier to handle.


its a 1/16" and 1/8" chisel, any bigger and it wouldn't be small enough to fit inside the channel...
Author:  Laurent Brondel [ Sat Jul 09, 2011 6:32 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
You have to do multiple passes with the circle cutter. The first one being only to scribe the wood, as light as you can so the blade does not wander following the grain, then as you get deeper add more pressure. Practice on vertical grain spruce, as it is what you'll encounter on a top, and is more difficult.
Author:  Tai Fu [ Sat Jul 09, 2011 7:11 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
Laurent Brondel wrote:
You have to do multiple passes with the circle cutter. The first one being only to scribe the wood, as light as you can so the blade does not wander following the grain, then as you get deeper add more pressure. Practice on vertical grain spruce, as it is what you'll encounter on a top, and is more difficult.


Are there any single bevel razor blades out there that I can get for the circle cutter so I can only cut on one side (and switch to an opposite bevel for the other side)?
Author:  Alexandru Marian [ Sat Jul 09, 2011 7:52 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
Here is a good talk about this:
http://www.delcamp.us/viewtopic.php?f=11&t=60338
Author:  Tai Fu [ Sat Jul 09, 2011 8:56 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
Alexandru Marian wrote:
Here is a good talk about this:
http://www.delcamp.us/viewtopic.php?f=11&t=60338


After some practice runs... I think some modification to the tools are necessary:

I need some ways of limiting the depth of cut... I think I will place a piece of wood on the blade and poke the blade through, so that only a little bit of the blade protrudes.

I also need a blade that has a flat side so that it lays against the good side, to get a vertical channel... but unfortunately the circle jig only comes with double beveled blades.

I don't have a grinder so how can I make a blade that fits? The blade fits inside the circle cutter with a set screw like so:

Maybe I should just buy the blade for the LMI cutter?

I will also ditch the center spike and simply drill a hole in the center that matches the center pin to avoid the center coming off...
Author:  oval soundhole [ Sat Jul 09, 2011 9:06 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
I do my rosettes by hand, heres a pic of my rather primitive set up
Image
Image
Author:  Tai Fu [ Sat Jul 09, 2011 9:28 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
Looks really good... I don't think a router jig would offer this kind of flexibility...

Those two cherries chisels are really good...
Author:  theguitarwhisperer [ Sat Jul 09, 2011 10:23 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
Nice Oval! You'lll have to give me some rosette tips!
Author:  alan stassforth [ Sat Jul 09, 2011 11:13 am ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
Oval, brilliant!
Didn't cost much either!
[clap] [clap] [clap]
Author:  oval soundhole [ Sat Jul 09, 2011 7:39 pm ]
Post subject:  Re: cutting rosette channel by hand, any thoughts/tips?
thanks, its simple and easy to do as well as affordable. BTW, the 2 cherries are great, the best and most used tools I own.
Page 1 of 1 All times are UTC - 5 hours
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/