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What kind of bits are these?

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Forum topic by Rick M posted 11-26-2015 06:26 AM 854 views 0 times favorited 11 replies Add to Favorites Watch
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Rick M

7933 posts in 1846 days


11-26-2015 06:26 AM

Some kind of Forstner bit but I’ve never seen ones exactly like these. Some have almost no point then one has a really long point.

-- http://thewoodknack.blogspot.com/


11 replies so far

View oldnovice's profile

oldnovice

5731 posts in 2834 days


#1 posted 11-26-2015 06:43 AM

The top one looks like a Forstner bit and the lower one looks like an auger bit, like one would use in a brace.
The bottom bit has no edge cutting capability like the Forstner bit.
Both look a little rusty and worse for the wear.

I have some like both of those!
That’s just my opinion …. but I could be wrong!

-- "I never met a board I didn't like!"

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Rick M

7933 posts in 1846 days


#2 posted 11-26-2015 06:55 AM



The top one looks like a Forstner bit and the lower one looks like an auger bit, like one would use in a brace.
The bottom bit has no edge cutting capability like the Forstner bit.

- oldnovice

The bottom one does actually have an edge cutter, it’s just hidden by the spur point; bad angle on the photo.

Top one is definitely a Forstner I’ve just never seen one with such a small point, almost nonexistent. It would make a nearly perfectly flat bottomed hole. I’ll test them tomorrow and we’ll find out.

-- http://thewoodknack.blogspot.com/

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TheFridge

5765 posts in 952 days


#3 posted 11-26-2015 07:06 AM

Forstner looks similar to a barefoot auger. End grain for both maybe? Only reason I’d think for it to have no Spurs?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View GerryB's profile

GerryB

69 posts in 2048 days


#4 posted 11-26-2015 07:21 AM

Or, is the spur broken (or worn off) on the one?

-- The pursuit of excellence is gratifying and healthy. The pursuit of perfection is frustrating, neurotic, and a terrible waste of time. Edwin Bliss

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jerryminer

528 posts in 908 days


#5 posted 11-26-2015 07:23 AM

Top one looks like a Forstner.

Bottom one looks like a Stanley “Power Bore” bit—-a discontinued line. (Clean up the shank and you may find the Stanley logo). Lee Valley sells a similar bit, called a “Greenwood Bit”

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MarcusM

57 posts in 2447 days


#6 posted 11-26-2015 02:31 PM

What size is that top one? Looks very much like a euro-hinge cup boring bit.

Regards, Mark

-- Tilbilly Mark

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mjn

8 posts in 2558 days


#7 posted 11-26-2015 03:37 PM

some old boat building bits would not have screws , ect. end grain , boring would follow the grain with screw type auger .

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CO_Goose

120 posts in 1257 days


#8 posted 11-26-2015 03:42 PM

The top one looks like a fly cutter for a milling machine. Something to level out a surface.

-- Just making sawdust

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Rick M

7933 posts in 1846 days


#9 posted 11-26-2015 08:44 PM


Or, is the spur broken (or worn off) on the one?
- GerryB

No, it’s part of a set, they are all the same.


Bottom one looks like a Stanley “Power Bore” bit—-a discontinued line. (Clean up the shank and you may find the Stanley logo). Lee Valley sells a similar bit, called a “Greenwood Bit”
- jerryminer

Bingo! I think you’ve pegged it.


What size is that top one? Looks very much like a euro-hinge cup boring bit.
Regards, Mark
- MarcusM

1-5/8”, it’s part of a set. I don’t have all of them but the smallest is 3/8”, largest is 1-5/8”.

-- http://thewoodknack.blogspot.com/

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DKV

3940 posts in 1970 days


#10 posted 11-26-2015 10:55 PM

3939

-- This is a Troll Free zone.

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Rick M

7933 posts in 1846 days


#11 posted 11-27-2015 04:04 AM

After cleaning up the bits I believe they were probably modified, the spurs ground off. Only 2 have readable markings, one is made in china and is very different than the rest, the other is Connecticut Valley Mfg. Co..

-- http://thewoodknack.blogspot.com/

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