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Project by kiefer posted 08-07-2016 03:04 PM 1607 views 10 times favorited 34 comments Add to Favorites Watch

This is a little trick I use cutting holes with a hole saw .
The way I do this is by marking the hole outline with the hole saw first and then drill another hole inside or outside of the cut line depending on which part is the waste material .
By drilling the small hole it gives the hole saw an escape route for the saw dust which makes the process faster and pretty much eliminated the burning of the wood especially with plywood where a lot of glue is present .
Doing this will also help the hole saw stay cooler keeping it from warping and burning the hole inside face .
Klaus

-- Kiefer https://www.youtube.com/user/woodkiefer1/videos





34 comments so far

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GR8HUNTER

895 posts in 106 days


#1 posted 08-07-2016 03:07 PM

smart

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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shipwright

7032 posts in 2192 days


#2 posted 08-07-2016 03:12 PM

That is brilliant Klaus. I just made some little “wheels” from Sapele with a hole saw and this little (make that big) trick would have made the process much better. Next time I will be drilling a relief hole.

Thanks for this.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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a1Jim

115076 posts in 2971 days


#3 posted 08-07-2016 03:13 PM

Good thinking Klaus.

-- http://artisticwoodstudio.com Custom furniture

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jbschutz

498 posts in 2085 days


#4 posted 08-07-2016 03:16 PM

Klaus, very clever. Another thing I like to do, is to cut halfway through and then flip the piece over to the other side. You can pretty much eliminate tear-out on the face of the second side.

-- jbschutz www.johnschutz.com

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USAwoodArt

224 posts in 336 days


#5 posted 08-07-2016 03:21 PM

Excellent idea Klaus…! Another thing to add to the bag of good ideas we all learn over our lifetime. I’ve got a lage set of forstner bit I have accumulated over the years and never once thought of using your method. You use your thinking cap for more than keeping your head covered…

-- Wood for projects is like a good Fart..."better when you cut it yourself"

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jaykaypur

3988 posts in 1802 days


#6 posted 08-07-2016 03:22 PM

Neat little tip. Thanks. I’ll have to trying this the next time I use a hold saw.

-- Use it up, Wear it out --------------- Make it do, Or do without!

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tyvekboy

1297 posts in 2407 days


#7 posted 08-07-2016 03:30 PM

Klaus – Good Tip. I’ve used that technique and it really does work. I usually drive several holes in the waste wood. I agree with JBSCHUTZ about drilling from both sides to eliminate tear-out. Drilling from both sides also makes it easier to take the plug out of the hole saw since some it sticks out of the hole saw blade.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

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bosum3919

338 posts in 1013 days


#8 posted 08-07-2016 03:45 PM

Thank Klaus. Really useful idea.

-- Bob

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kiefer

4873 posts in 2061 days


#9 posted 08-07-2016 03:46 PM

Thanks all
This little trick came about when a plumber was swearing and cussing drilling holes through d-fir floor joist saying it took forever and just hated this part of his job .Watching and observing on how he drilled the holes wiggling the drill from side to side and making the hole bigger in the process to give the sawdust an escape route it clicked that a small hole at the cutline may work and it did speeding up the cutting process and pretty much eliminating the burning and making the hole saw last a lot longer as it is the heat that wrecks the hole saw .

What John/JBSCHUTZ said about drilling from both sides is very true and also works well on double floor joist when the hole saw is not deep enough but the pilot bit is extended long enough to drill through both joists .

Klaus

-- Kiefer https://www.youtube.com/user/woodkiefer1/videos

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eddie

8296 posts in 2008 days


#10 posted 08-07-2016 03:52 PM

cleaver, very cleaver

-- Jesus Is Alright with me

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woodshaver (Tony)

3931 posts in 2747 days


#11 posted 08-07-2016 05:23 PM

I also use this technique. It works really well! Just wish I found out about this before I dulled all my hole saw blades.

-- Tony C UAW, St Augustine FL, My high school shop teacher said "You can do it"... Now I can't stop!

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Dutchy

1941 posts in 1562 days


#12 posted 08-07-2016 05:42 PM

Klaus a brilliant idea. I know that dust is a problem using BI metal hole drills. Designed for cutting metal they have to much teeth for drilling wood. Despite they are used a lot for wood. Your solution is great and makes it much more easier to use them for wood.

However I prefer to use hole drills made for drilling wood like these ones. and I’m sure the plumber will agree.

-- My englisch is bad but how is your dutch?

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doubleDD

4989 posts in 1437 days


#13 posted 08-07-2016 05:49 PM

Very clever idea Klaus. This should be a easy one for me to remember. I will use it.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

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MontanaBob

546 posts in 2078 days


#14 posted 08-07-2016 06:02 PM

I try to learn something new everyday….. I just did…. Outstanding….

-- To realize our true destiny, we must be guided not by a myth from our past, but by a vision of our future

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HillbillyShooter

5811 posts in 1686 days


#15 posted 08-07-2016 06:05 PM

Good thinking, and very timely since i need to cut some wheel shims for my current project.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

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