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| Wood Rosette Design http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=25002 |
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| Author: | PeterDeWitt [ Fri Dec 11, 2009 1:22 pm ] |
| Post subject: | Wood Rosette Design |
Does anyone do rosettes with this sort of "radial wood" design? What is the general procedure for making one of these? Thanks! Peter |
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| Author: | David LaPlante [ Fri Dec 11, 2009 1:58 pm ] |
| Post subject: | Re: Wood Rosette Design |
I use a number of radial elements in my rosettes. Sometimes as merely spacers for the main design elements and sometimes as accents. Though mine are rather traditional, the same principles apply to the type you are asking about. You need to calculate the angle of the wedges (this is easiest to do on paper) which when assembled will give you 360 degrees of stock from which to cut your design, or that which will fill in between other elements. Check out my article in this past spring's issue of the ASIA mag. Attachment: RosetteNumber90.jpg Attachment: RosetteNumber92.jpg Attachment: RosetteNumber96.jpg
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| Author: | Christian Schmid [ Fri Dec 11, 2009 2:17 pm ] |
| Post subject: | Re: Wood Rosette Design |
About the angle: a = ( (n-2) x 90 ) / n where n is the number of wedges wou want to use and a is the angle as in the diagram. Attachment: wedge.JPG
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| Author: | JohnAbercrombie [ Fri Dec 11, 2009 2:33 pm ] |
| Post subject: | Re: Wood Rosette Design |
Though my attempts were much simpler than the outstanding examples in the pics above (Thanks, David!) I found that printing out some polar graph paper can help with planning layout and angles. If you are making the segments with simple wood wedges, you can glue up the segments (over the graph paper, with wax paper separator) and then cut them 'round' afterward with your rosette jig. For polar paper: lots of spots on the web, like http://www.printfreegraphpaper.com/ or with freeware,or just buy a pad of pre-printed paper. Cheers John |
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| Author: | PeterDeWitt [ Fri Dec 11, 2009 2:47 pm ] |
| Post subject: | Re: Wood Rosette Design |
Great help, guys. How do you set-up the wedged piece for your rosette cutting tool? Do you use double-stick tape? I am assuming that you do not extend the wedges all the way to the center (such that it could be mounted on the center-pin of a rosette cutting jig). Thanks, Peter |
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| Author: | Mike Collins [ Fri Dec 11, 2009 2:47 pm ] |
| Post subject: | Re: Wood Rosette Design |
Peter; I did a tutorial on wood rosettes about 2 years ago. If you look through the archives you may find it. I can repeat it if necessary. Mike |
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| Author: | JohnAbercrombie [ Fri Dec 11, 2009 2:49 pm ] |
| Post subject: | Re: Wood Rosette Design |
If you search around for 'segmented rosette' you will find more examples. http://www.luthiersforum.com/forum/viewtopic.php?f=10102&t=9649&hilit=+segmented+rosette At one time there was a tutorial by Michael Dale Payne on more complex segmented rosettes, but I couldn't find it - the OLF tutorial section has 'gone away'??- links don't work. I also recall a sled similar to Steve Saville's (by Tony Karol??) but again, can't find it here. Edit: and also Mike Collins's tutorial. I'd appreciate links when somebody finds these. Cheers John |
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| Author: | Fred Tellier [ Fri Dec 11, 2009 2:52 pm ] |
| Post subject: | Re: Wood Rosette Design |
For AutoCad users there is a circular array function that you can select the diameter and number of segments when drawing, it can then be printed and used as a pattern to cut the segments. I have not tried it for this use but used it to make dial faces. Fred |
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| Author: | JohnAbercrombie [ Fri Dec 11, 2009 2:56 pm ] |
| Post subject: | Re: Wood Rosette Design |
PeterDeWitt wrote: Great help, guys. How do you set-up the wedged piece for your rosette cutting tool? Do you use double-stick tape? I am assuming that you do not extend the wedges all the way to the center (such that it could be mounted on the center-pin of a rosette cutting jig). Thanks, Peter Peter- Strictly amateur advice here, but I don't use double-stick tape- I find it moves when I don't want it to, or grips so hard that I can't get pieces separated without breaking. It also tends to leave 'goo' behind. Perhaps I haven't found the right type/brand. I make the wedges 'oversize, assemble on wax/polar paper with CA, then tack (with thick CA in a few spots) the edge of 'rough rosette' to a disposable workboard with the 'axle hole' drilled in it. Then I rout the ring free with the router and a small bit. I usually put some tape across the first cut when cutting the second, to try to keep things from flying apart at the end. Cheers John |
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| Author: | WaddyThomson [ Fri Dec 11, 2009 3:27 pm ] |
| Post subject: | Re: Wood Rosette Design |
Many of the tutorials from the old forum can be found in the thread "All OLF Archived Tutorials", HERE. There are several under the Rosette heading. Mike's is there! |
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| Author: | JohnAbercrombie [ Fri Dec 11, 2009 3:51 pm ] |
| Post subject: | Re: Wood Rosette Design |
WaddyThomson wrote: Many of the tutorials from the old forum can be found in the thread "All OLF Archived Tutorials", HERE. There are several under the Rosette heading. Mike's is there! Thanks, Waddy. Most of the links in that thread still seem to work. Bookmarked. John |
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| Author: | mateo4x4 [ Fri Dec 11, 2009 5:49 pm ] |
| Post subject: | Re: Wood Rosette Design |
Give this site a once over...I think this is where I got an app from some time back that worked well for designing rosettes. http://gicl.cs.drexel.edu/people/sevy/luthierie/software/software.html -Matthew |
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| Author: | Ken Franklin [ Sat Dec 12, 2009 1:53 am ] |
| Post subject: | Re: Wood Rosette Design |
Hi Peter, I cut the channel for the wedges out of the sound board first and then glue each wedge in place. Then I cut the inside and outside channels for the purfling. That cleans up the arches on the wedges This method saves some steps. I use a fly cutter but a router with a good base and the appropriate bits would work as well. This isn't a radial rosette but I have used the same process for radial rosettes. |
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| Author: | SteveSmith [ Sat Dec 12, 2009 8:20 am ] |
| Post subject: | Re: Wood Rosette Design |
Here's how I did my first radial wood rosette. I started off by drawing a sketch to calculate the angle and dimensions for the wedges. Sliced some strips of Myrtle burl and sanded them to thickness then used a miter box to cut the wedges. Attachment: DSCF0454.JPG Glued the wedges by hand on a piece of waxpaper using CA and accelerator. I added 0.030" BWB purfling strips between the wedges. Next I used double-stick tape to put it on a piece of scrap 1/2" plywood and ran it through the thickness sander to even everything up. Attachment: DSCF0445.JPG Used the Wells-Karol jig with a 1/8" downcut bit to cut it out. Attachment: DSCF0447.JPG Finally I flooded the board with a small amount of naptha and used a thin artists spatula to work it off the board Attachment: DSCF0449.JPG Ready to inlay. I had to put some more CA on the joints when several came loose. I like Todd's idea of using a piece of 1/64" plywood as a base and will try to find some for next time. Attachment: DSCF0455.JPG
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| Author: | SteveSmith [ Sat Dec 12, 2009 11:13 am ] |
| Post subject: | Re: Wood Rosette Design |
Thanks Todd, I'm sure I can find some in one of the local hobby shops. The rosettes are a bit too fragile the way I did it. |
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| Author: | Chris Paulick [ Sat Dec 12, 2009 3:53 pm ] |
| Post subject: | Re: Wood Rosette Design |
You could also just figure out how long you want each segment and cut the arch segments out if you have a jig like my abalam cutting jig. viewtopic.php?f=10117&t=18878 Just set your inside and outside radius. I cut all these curved pieces from 1 1/2" or less blanks. The only lines are at the inside and outside and between the .030" MOP rings. One more way to skin the cat. |
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