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How small a curve with BS

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Forum topic by BJODay posted 02-03-2015 09:15 PM 690 views 0 times favorited 11 replies Add to Favorites Watch
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BJODay

514 posts in 1411 days


02-03-2015 09:15 PM

Topic tags/keywords: band saw radius

Hey all,
I recently bought a used 14” Delta BS. I am happy with it but I have no experience with this type of saw. I currently have a 0.25” blade installed. How tight of a radius can I expect to cut with this blade. I used it to cut a 1.0” radius. It worked well but I did some back and forth moves that left some ridges to sand out. I’m no sure how far I can deflect the blade trying to force it into the desired arc.

I’ve seen a demo video on youtube where someone cuts a three dimensional reindeer. He was really deflecting the blade to make some small curves. Is this normal or was that overdoing it?

Any advice is appreciated.
BJ


11 replies so far

View Loren's profile

Loren

8315 posts in 3116 days


#1 posted 02-03-2015 09:24 PM

You can get a bit more ease cutting tight curves by rounding
the back of the blade.

View AlaskaGuy's profile

AlaskaGuy

2406 posts in 1777 days


#2 posted 02-03-2015 09:25 PM

View distrbd's profile

distrbd

2228 posts in 1914 days


#3 posted 02-03-2015 09:27 PM

1’8” 14 tpi=3/8”D.
A 1/4” blade will cut 1/2” radius or 1” diameter.
1/2” 3tpi=2.1/2” D.
3/4” =5.1/2” D.
All this info came directly from Mark Duginske’s “THE NEW & COMPLETE GUIDE TO THE BANDSAW” book.

-- Ken from Ontario, Canada

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patron

13538 posts in 2809 days


#4 posted 02-03-2015 09:57 PM

heres what came with my grizzly bandsaw

Blade size Width Radius
1
⁄8’’................................3⁄16’’
3
⁄16’’ ..............................5⁄16’’
1
⁄4’’................................5⁄8’’
3
⁄8’’................................11⁄2’’
1
⁄2’’................................21⁄2’’
5
⁄8’’................................4’’
3
⁄4’’................................51⁄2’‘

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View gfadvm's profile

gfadvm

14940 posts in 2158 days


#5 posted 02-03-2015 10:12 PM

I use the same chart that Ken cited. (that is a great reference for all things bandsaw)

The reindeer you saw were cut with a Carter Stabilizer which allows you to twist the blade further than conventional guides. It also allows you to back out of cuts with the saw running without pulling the blade off the wheels.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View BJODay's profile

BJODay

514 posts in 1411 days


#6 posted 02-03-2015 10:15 PM

Thanks for the info and references.

BJ

View Kelly's profile

Kelly

1114 posts in 2412 days


#7 posted 02-03-2015 10:56 PM

As gfadvm says, essentially, throw all these figures away, if you use a Carter Stabilizer guide system. I say this based on experience with mine.

View Roger's profile

Roger

19886 posts in 2272 days


#8 posted 02-04-2015 12:23 AM

Everyone plus the almighty, Google, has answered your request.. lol

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. Kentuk55@yahoo.com

View Jim Finn's profile

Jim Finn

2417 posts in 2390 days


#9 posted 02-04-2015 01:05 AM

Another important point is that after cutting any wood with a band saw the cut surface will need to be sanded. How much sanding do you want to do? A scroll saw, on the other hand, will cut a radius as small as 1/8” radius or less and will require no sanding. The cut surface will be that good.

-- "You may have your PHD but I have my GED and my DD 214"

View BJODay's profile

BJODay

514 posts in 1411 days


#10 posted 02-04-2015 02:04 AM

Little too thick for a scroll saw, (at least my scroll saw). I don’t mind sanding out some lines. I just wasn’t sure how far I could twist the blade on a BS.

BJ

View bigblockyeti's profile

bigblockyeti

3668 posts in 1188 days


#11 posted 02-04-2015 02:19 AM

At one of the WoodWorking shows I watched a guy at the Carter booth cut many three dimensional reindeer as he was displaying the ability of a very thin blade to cut very, very tight radii using one of their stabilizers. Those reindeer must just about be trademarked by Carter as I’ve seen the same thing in many videos as well.

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