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  #1  
Old 09-19-2014, 08:18 PM
ericw ericw is offline
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Default New guy needs help

Hey Guys,

I'm a new guy with a new toy. Stinger II with an indexer. I have a lot of seemingly stupid questions. I'm a rifle stock maker with a patent pending on a new composite stock process. I will be cutting PBLT foam 40# laminated with
.020 +- carbon fiber alternating with 1/4" foam layers.
My question is this.
Which bits should cut this combination the best. The outside contour of the stock is fairly mundane so I'm assuming a combo of hogging and ball nose types will work. However, what make and material? The bit will NOT spend a whole lot of time in the carbon fiber as it's a vertical laminate. I'm brand new to this CNC stuff but on fire to learn the right way to go about things. Be gentle and speak in complete sentences. Even the lingo is new to me.

Thanks in advance,
Eric Wahlberg, Owner
Inner Mountain Rifle Stocks
www.innermountainriflestocks.com

Last edited by ericw; 09-19-2014 at 08:20 PM.
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  #2  
Old 09-19-2014, 08:42 PM
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james mcgrew james mcgrew is offline
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Moved this thread to materials and Bits section,, there will be some answers soon enough !!
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  #3  
Old 09-19-2014, 10:36 PM
ericw ericw is offline
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Ah, thanks Jim. I realized what I did shortly after I posted. It's a new guy thing.

Eric
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  #4  
Old 09-20-2014, 09:56 PM
Charlie_L Charlie_L is offline
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Sounds interesting. Wish I could answer this for you.
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  #5  
Old 09-21-2014, 12:10 PM
Claude Claude is offline
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Hi Eric,

I think your best bet would be to communicate with the board company to ask them where to find the best bit for your work.

It could mean also that you will have to change bit for the carbon and other composite.

Respect
Claude
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Old 09-22-2014, 09:40 AM
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Joey Jarrard Joey Jarrard is offline
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This is the bit I would try first. It is a bit that is used on hard to cut items.

http://www.usroutertools.com/3-8-inc...p/sru611sl.htm

You may want to try the upcut and the downcut to see the one that gives you the best cut,

Now when it comes to a ball nose for finishing the typical ball nose for wood is going to be a good place to start.
http://www.usroutertools.com/1-4-inc...-p/sbnu250.htm

I would start here and then we can move up. But I hate to start a person out with a $100 bit that ends up needing the $30. Just let me know if you need help If so we may need to get Chuck from Southeast Tools to take a look at it.
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  #7  
Old 09-22-2014, 08:20 PM
ericw ericw is offline
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Thanks guys that's exactly what I'm looking for. Joey, great advice I'll order soon.

Eric
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