Yet one more Kerf offset tool

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Project by ChrisinOttawa posted 11-19-2009 08:57 PM 15415 views 101 times favorited 30 comments Add to Favorites Watch

When I saw the Bridge City KM-1 Kerfmaker last week I thought it was an elegant solution to cutting precise dados and grooves! After watching the YouTube video I realized there wasn’t much to it. The rosewood unit here is my third version. The rosewood takes on a beautiful luster when polished. I use my machine lathe to cut and knurl the brass bits. All fasteners are machine screws as opposed to wood screws.
This is the only forum where I’ve found other similar tools.
It works great! There’s nothing worse than cutting the groove to wide and this tool saves on the trial and error setup time. May build some more and put them on eBay for fun.

-- Chirs in Ottawa

30 comments so far

View John's profile


341 posts in 3579 days

#1 posted 11-19-2009 09:13 PM


-- John - Central PA -

View Chris Cunanan's profile

Chris Cunanan

339 posts in 3262 days

#2 posted 11-19-2009 09:17 PM

best i’ve seen yet! you could definitely sell these, if you could somehow keep the price down…maybe sell in sets to achieve that better. I think people would pay $30-50 for a set, I don’t know how that translates to your overhead, but I’d be interested to hear your analysis of it. great job either way, Someone will have the most gorgeous kerf tool out there for decades if not centuries to come. I bet eventually people like us in the future will be posting pictures of it all beat up on some forum asking “what the Heck is this thing?” =] seriously though, it seems like you easily have the capability, you should put some sort of marker/serial # on the brass and stamp/burn your logo/name onto the wood…i think that would be sweet!

View BigFoot Products Canada's profile

BigFoot Products Canada

710 posts in 3174 days

#3 posted 11-19-2009 09:26 PM

Great Job,
I also designed a bunch out of acrylic. I really like how you done the Offset pin and the Mainframe lock.
You’ve given me some more ideas..:) Thanks for sharing. They are not patented, supposedly they’ve apllied for a US one but that don’t count in Canada anyhow, if they do get it.
I assure you yours will sell..!

View Blake's profile


3442 posts in 3656 days

#4 posted 11-19-2009 10:42 PM

Awesome job.

-- Happy woodworking!

View Dusty56's profile


11812 posts in 3469 days

#5 posted 11-20-2009 02:42 AM

Looks nice in those tiny pictures …any way to repost them any larger ?

-- I'm absolutely positive that I couldn't be more uncertain!

View TopamaxSurvivor's profile


18029 posts in 3457 days

#6 posted 11-20-2009 04:11 AM

Looks fantastic from here!!

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

View zlatanv's profile


691 posts in 3015 days

#7 posted 11-20-2009 05:14 AM

Nice work.

-- Z, Rockwall, TX

View Ken90712's profile


17472 posts in 2970 days

#8 posted 11-20-2009 11:38 AM

Looks good! Let me know when you put it on ebay I could be interested!

-- Ken, "Everyday above ground is a good day!"

View cabinetmaster's profile


10874 posts in 3339 days

#9 posted 11-20-2009 01:37 PM

I got to have one of these too. Please let me know when you do put some on Ebay.

-- Jerry--A man can never have enough tools or clamps

View woodworm's profile


14428 posts in 3372 days

#10 posted 11-20-2009 03:33 PM

Nicely done!

-- masrol, kuala lumpur, MY.

View Scott Bryan's profile

Scott Bryan

27251 posts in 3603 days

#11 posted 11-20-2009 04:16 PM

Chris, this looks really good. The combination of wood and brass gives this tool an upscale look and the rosewood is simply gorgeous.

Nice post. These should sell without a problem.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View patron's profile


13578 posts in 3122 days

#12 posted 11-20-2009 04:29 PM

this is very nice ,

is there a way you could make it with an extension ?
this looks like 4 to 6 inches working size,
maybe something that makes it to say 12 inches also ,
fr soji screens ?

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

View RexMcKinnon's profile


2593 posts in 2977 days

#13 posted 11-20-2009 05:58 PM

That looks like a precision tool. Nice work.

-- If all you have is a hammer, everything looks like a nail!

View Andy's profile


1681 posts in 3690 days

#14 posted 11-20-2009 07:39 PM

A real work of art, thats also very functional.

-- If I can do it, so can you.

View OhValleyWoodandWool's profile


970 posts in 2902 days

#15 posted 11-20-2009 09:23 PM


-- "All you need in this life is ignorance and confidence, and then Success is sure." Mark Twain

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