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bearing against plexi

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mikemcnerney

Post subject: bearing against plexi

Posted: Fri Feb 19, 2010 6:44 pm

Koa

Joined: Tue Jul 22, 2008 9:34 pm
Posts: 514
Location: ottawa, ontario, ca
First name: Mike
Last Name: McNerney
City: Ottawa
State: On
Country: Ca
Focus: Build
Status: Amateur

Has anyone ever run a flush trim or template bit, (the bearing) against their plexiglass tempalte to make another template? Or does it melt or damage it?
Mike McNerney

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Mike McNerney

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Dave Fifield

Post subject: Re: bearing against plexi

Posted: Fri Feb 19, 2010 7:01 pm

Koa

Joined: Wed Jan 23, 2008 8:05 pm
Posts: 1567
Location: San Jose, CA
First name: Dave
Last Name: Fifield
City: San Jose
State: CA
Zip/Postal Code: 95124
Country: USA
Focus: Build
Status: Amateur

Mike, I use acrylic templates with pattern routing bits all the time. I've never had any heat problems. Plexiglas is more heat tolerant than acrylic. Go for it.

Cheers,
Dave F.

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Cambrian Guitars

"There goes Mister Tic-Tac out the back with some bric-brac from the knick-knack rack"

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Bob Garrish

Post subject: Re: bearing against plexi

Posted: Fri Feb 19, 2010 8:54 pm

Brazilian Rosewood

Joined: Tue May 02, 2006 9:02 am
Posts: 2351
Location: Canada
First name: Bob
Last Name: Garrish
City: Toronto
State: Ontario
Country: Canada
Status: Professional

Dave Fifield wrote:

Mike, I use acrylic templates with pattern routing bits all the time. I've never had any heat problems. Plexiglas is more heat tolerant than acrylic. Go for it.

Cheers,
Dave F.

Plexi IS acrylic

That said, it takes more heat than you should be putting into it with a bearing to melt. If you were letting the shank of the too rub, instead, then you'd need to make sure not to doddle.

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Bob Garrish
Former Canonized Purveyor of Fine CNC Luthier Services

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Dave Fifield

Post subject: Re: bearing against plexi

Posted: Fri Feb 19, 2010 11:36 pm

Koa

Yep, you're right Bob! I'm always mixing up Plexi and Lexan. Lexan is polycarbonate, right?

Cheers,
Dave F.

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Cambrian Guitars

"There goes Mister Tic-Tac out the back with some bric-brac from the knick-knack rack"

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Bob Garrish

Post subject: Re: bearing against plexi

Posted: Sat Feb 20, 2010 5:25 pm

Brazilian Rosewood

Joined: Tue May 02, 2006 9:02 am
Posts: 2351
Location: Canada
First name: Bob
Last Name: Garrish
City: Toronto
State: Ontario
Country: Canada
Status: Professional

Dave Fifield wrote:

Yep, you're right Bob! I'm always mixing up Plexi and Lexan. Lexan is polycarbonate, right?

Cheers,
Dave F.

Yep.

There are a lot of brand names for both. I end up buying most of my acrylic sheet branded as Lucite. It can get really annoying when looking for a specific product (like 'blue acrylic' or something) and finding nothing under 'blue acrylic' but loads of hits under 'blue Lucite' or 'blue Plexiglass' etc etc.

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Bob Garrish
Former Canonized Purveyor of Fine CNC Luthier Services

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