Scroll saw fretwork lookalike issues on my cnc

Scroll saw fretwork lookalike issues on my cnc

Postby jerrysim » Fri Jun 26, 2015 7:14 pm

Hi. Needing some advice on holding down the wood blank as it being machined. For the most part, I can almost mimic a scroll saw piece using 1/4 in. Baltic birch with 1/16 end mill. When the fretwork becomes fragile due to the smaller areas left after it is machined, the strength of the wood is gone and the bit tears up the remaining area and I'm wondering if anything can be done about it. Thanks jerry
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby gordread » Fri Jun 26, 2015 10:08 pm

Maybe a downcut spiral? That way the wood is being pushed into your spoilboard, where it will be support. I don't think I've ever cut anything quite that fine. Good luck.

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Re: Scroll saw fretwork lookalike issues on my cnc

Postby Rcnewcomb » Fri Jun 26, 2015 10:48 pm

Try Intertape 9970 double sided carpet tape: ->Link

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Re: Scroll saw fretwork lookalike issues on my cnc

Postby jerrysim » Fri Jun 26, 2015 10:59 pm

Thanks guys. I'm using a Freud 1/16 bit end mill. That size is hard to come by, especially a spiral down style. I'm definitely going to do a search for it. I will also try the tape too. Thanks.
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby eph210 » Fri Jun 26, 2015 11:06 pm

Sometimes selecting the cutting order can make a difference. I have manually selected the vector order so that it cut from the inside of the sheet to the outside.
Another possibility is to pause the program and use some hot melt glue on the previously cut area.
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby Rcnewcomb » Fri Jun 26, 2015 11:23 pm

The Onsrud 64-000 is a 1/16" downspiral. ->Link

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Re: Scroll saw fretwork lookalike issues on my cnc

Postby jerrysim » Sat Jun 27, 2015 5:29 am

hi. thanks all for advice.. how can I manually select the vector order so that it cuts from the inside of the sheet to the outside. thanks again
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby scottp55 » Sat Jun 27, 2015 10:09 am

Had very good luck with this bit in the last 3 months in all species from Cherry to Bloodwood.
http://www.ebay.com/itm/1-16-0625-CARBIDE-2-FLUTE-ENDMILLS-DOWNCUT-FOR-SOFT-PLASTIC-/381285659406?pt=LH_DefaultDomain_0&hash=item58c665730e
And have only tried this guys Fishtail bits in a .117" but VERY clean sidewalls and no splintering.
Some people swear by them though.
http://www.precisebits.com/products/carbidebits/downcut_2flute.asp
Use "vector selection order(don't optimize)" checkbox if you created them in the order you want cut, OR SHift/select in the order you want them cut and check that box when you toolpath.
I've had better luck carving any holes/shapes with "profile Inside" Before cutting any "profile outside" toolpaths.
Randall, does that tape release well/easily? Been using Ace Ext/fiberglas reinforced in 1.88" and like how fiberglass fibers let you Yank on it pretty good when releasing.
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby jerrysim » Sat Jun 27, 2015 4:42 pm

Good recommendations thanks to all who replied.
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby Ms Wolffie » Wed Aug 26, 2015 2:31 pm

Pity we haven't heard from Josz for a while :(
He made some amazing fretwork pieces.
Cheers
Wolffie

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Re: Scroll saw fretwork lookalike issues on my cnc

Postby Xxray » Wed Aug 26, 2015 6:09 pm

Sharp bit and slower feed speeds [and prayer] is all I can think of offhand.

Considering scroll saw blades are hair thin, will never be an easy task trying to replicate by machine. I think I would try 1/8 wood, and a microbit with a downsized collet if necessary.
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Re: Scroll saw fretwork lookalike issues on my cnc

Postby Ms Wolffie » Fri Aug 28, 2015 1:37 pm

Ms Wolffie wrote:Pity we haven't heard from Josz for a while :(
He made some amazing fretwork pieces.

Here is some of Joz's work.
I am sure he will help if you need it.
Black Forest Clock1.JPG

Black Forest Clock1
Dome Clock Side View.JPG

Dome Clock Side View
Gingerbread Wall Clock1.JPG

Gingerbread Wall Clock1
Grand Geneva-1.JPG

Grand Genava
Russian Forest Mantle Clock -1.JPG

Russian Forest Mantle Clock
Shopiere Clock.JPG

Shopiere Clock
Cheers
Wolffie

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Re: Scroll saw fretwork lookalike issues on my cnc

Postby Ms Wolffie » Fri Aug 28, 2015 1:39 pm

And finally
Grand me Serenity.JPG
Grant Me Serenity
Cheers
Wolffie

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