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Petoskey Stone Rosette

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Ken C

Post subject: Petoskey Stone Rosette

Posted: Sat May 12, 2012 8:28 pm

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Joined: Wed Jul 02, 2008 11:44 am
Posts: 1005
Location: SE Michigan
First name: Kenneth
Last Name: Casper
City: Northville
State: MI
Country: U.S.A
Focus: Build

This is cool enough that I thought I would share. As some of you may know, I am building a L-OO style guitar of native Michigan woods. My customer also wanted Petoskey stone for the rosette and fingerboard inlays if we could make it work. I got some sliced Petoskey stone from a guy in Boyne City and ran it through my CNC to get the slices down to a consistent 60 thou. I then had the CNC cut out 8 segments that I could assemble into a finished rosette.

For those of you who have never heard of Petoskey stone, it is fossilized coral found near Petoskey, presumably along the shores of Lake Michigan. It is essentially limestone, so it is fairly soft and cuts easily.

The stone hasn't been polished, but in the pictures of the rosette ring, I spritzed the stone with water.

Ken

p.s. Thanks again Trev for getting me squared away on RhinoCAM!

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Parser

Post subject: Re: Petoskey Stone Rosette

Posted: Sat May 12, 2012 10:18 pm

Koa

Joined: Tue Nov 28, 2006 1:44 pm
Posts: 1105
Location: Crownsville, MD
First name: Trevor
Last Name: Lewis
City: Crownsville
State: MD
Zip/Postal Code: 21032
Country: USA
Focus: Build
Status: Semi-pro

Hey Ken, no problem - that looks great! I love seeing different organic materials being used, great idea...!

Trev

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Ken McKay

Post subject: Re: Petoskey Stone Rosette

Posted: Mon May 14, 2012 12:55 am

Koa

Joined: Fri Jan 25, 2008 9:55 am
Posts: 982
Location: Traverse City Michigan

Ken that looks fantastic. Petoskey stone rosette...great idea.

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Tony_in_NYC

Post subject: Re: Petoskey Stone Rosette

Posted: Mon May 14, 2012 9:05 am

Contributing Member

Joined: Tue Oct 12, 2010 9:01 pm
Posts: 3031
First name: Tony
Last Name: C
City: Brooklyn
State: NY
Focus: Build
Status: Amateur

Cool rosette Ken. You certainly seem to enjoy shoving your new CNC in our faces every chance you get, don't you?
Just kidding. I wish I had one just for making bridges. I very much dislike making bridges.

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Ken C

Post subject: Re: Petoskey Stone Rosette

Posted: Mon May 14, 2012 2:39 pm

Contributing Member

Joined: Wed Jul 02, 2008 11:44 am
Posts: 1005
Location: SE Michigan
First name: Kenneth
Last Name: Casper
City: Northville
State: MI
Country: U.S.A
Focus: Build

Thanks Guys.

Ken: We are also inlaying Petoskey stone ovals in the fingerboard! I had hoped to get the rosette in your pine top sometime this week, but this week and the next couple are pretty hectic, so my time in the shop will be extremely limited.

Ken

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Mike Lindstrom

Post subject: Re: Petoskey Stone Rosette

Posted: Mon May 14, 2012 11:56 pm

Koa

Joined: Sun Oct 28, 2007 4:40 pm
Posts: 763
Location: United States

Can't wait to see how it looks under a finish.

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Tony_in_NYC

Post subject: Petoskey Stone Rosette

Posted: Tue May 15, 2012 5:52 am

Contributing Member

Joined: Tue Oct 12, 2010 9:01 pm
Posts: 3031
First name: Tony
Last Name: C
City: Brooklyn
State: NY
Focus: Build
Status: Amateur

Is that stone always blue and where could one procure some should they desire to use it for a rosette? I like it.
I always like seeing your guitars Ken. Your claro walnut J-185 is still one of my favorites.

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James W B

Post subject: Re: Petoskey Stone Rosette

Posted: Tue May 15, 2012 9:48 am

Koa

Joined: Sat Jul 01, 2006 5:55 am
Posts: 1392
Location: United States
First name: James
Last Name: Bolan
City: Nashville
State: Tennessee
Country: USA

Pretty cool.We found a couple of Petrosky`s on the shores of lake Michigan a few summers ago.They are really cool.

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Ken C

Post subject: Re: Petoskey Stone Rosette

Posted: Tue May 15, 2012 6:32 pm

Contributing Member

Joined: Wed Jul 02, 2008 11:44 am
Posts: 1005
Location: SE Michigan
First name: Kenneth
Last Name: Casper
City: Northville
State: MI
Country: U.S.A
Focus: Build

James, I have never actually found a stone (granted I had never looked for one either), but I have seen polished Petoskey stones for sale in every little shop up north! Tony, the stones range from brownish black to the bluish gray shown above. The cool ones are dark with really light rings, but I didn't want to use dark stone in this rosette. I am going to burst the top, and I wanted some contrast. Easy to locate the stones, harder to find someone to saw one up. Took several calls to find the guy that helped me out. Even then, the stone was cut way too thick to use for a rosette, so I had to level and thickness it before I could cut out the rosette segments.

Ken

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