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Carbide Fostner Bits???

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Forum topic by JTTHECLOCKMAN posted 1725 days ago 1041 views 0 times favorited 6 replies Add to Favorites Watch
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JTTHECLOCKMAN

155 posts in 1752 days


1725 days ago

Anyone out there use carbide fostner bits? If so what brand have you found to be better quality? How do they compare to HSS? I am drilling alot of high density acrylic billiard balls and HSS bits are wearing out very fast. I was thinking of carbide. Any other suggestions Also tried the titanium coated ones and they are not fairing well either. Thanks for the replys.

-- John T.


6 replies so far

View Ger21's profile

Ger21

619 posts in 1733 days


#1 posted 1724 days ago

I’ve used Freud. I’m not really aware of any others, except for boring bits made for CNC machinery with 10mm shanks.

-- Gerry, http://home.comcast.net/~cncwoodworker/CNC_Woodworker.html

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Kjuly

302 posts in 1888 days


#2 posted 1724 days ago

I also have a Freud.
It holds an edge a lot longer than HSS.
I have to ask…What are you making with the billiard balls?
Keith

-- Keith, Charlotte, MI www.julyswoodworks.com

View mski's profile

mski

412 posts in 2583 days


#3 posted 1724 days ago

I got a Rockler one for hinges, works A+’
If you are drilling high density acrylic alot I would go for it, carbide isn’t as sharp but will last longer and I have no idea if you can resharpen those HSS bits without changing the size.
I have a carbide bandsaw blade that will hog through any wet or knotty log and keep going and going.
You might be able to diamond hone carbide without changing the size also.
My 2 c
Peace

-- MARK IN BOB, So. CAL

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TopamaxSurvivor

14611 posts in 2278 days


#4 posted 1724 days ago

I have drilled them to make bowling balls for the dwarfs that live acorss the street.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View JasonWagner's profile

JasonWagner

523 posts in 1782 days


#5 posted 1724 days ago

ha ha…you mean “little people”

-- some day I hope to have enough clamps to need a clamp cart!

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ondablade

105 posts in 1801 days


#6 posted 1724 days ago

Here’s a page from Germany listing Famag’s carbide tipped Bormax3 Forstners about half way down. http://www.fine-tools.com/bohr4.htm They’re bloody expensive.

Here’s a set of carbide Forstners from Woodtek costing about 1/4 of the price: http://woodworker.com/fullpres.asp?PARTNUM=109-094&LARGEVIEW=ON

It’s quite hard to figure what’s what. There’s lots talked about the advantages of the much tougher higher quality fine grained carbide – but i never seem to be able to tell when it’s about paying for the brand, or about paying for quality.

I recently ended up buying a set of 15 of Famag’s series 1622 HSS Forstners, they were still very expensive but will hopefully be worth it – the carbides were just too rich for me….

ian

-- Late awakener....

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