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Vintage Craftsman 306.9121 planer restoration #3: Making the Knife setting jig

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Blog entry by Don W posted 07-26-2012 02:33 PM 3335 reads 1 time favorited 18 comments Add to Favorites Watch
« Part 2: OK moving right along Part 3 of Vintage Craftsman 306.9121 planer restoration series Part 4: The final Chapter Adding the extensions. »

I know I could just go buy a knife setting jig, but some how spending $80+/- for something I’ll use once or twice a year just didn’t seem right. So I made my own.

First I found a piece of scrap cherry. I chose cherry because it was a piece of scrap the exact size I needed. I think its karma.

I then measured the width of the cutter head


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I divided that in half and set my hole cutter to make the half circle.
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A little sanding to get it just right.
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Verified the fit.
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Drilled for the knife groove. (note its slightly off center)
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Cut out a pattern for a better look and feel.
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Drilled for the adjustment screw.
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Found 2 more pieces of scrap and glued them for reinforcing the jig with the short grain direction.
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Tapped for the adjustment screw.
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Added the adjustment screw, nut and washer.
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The using a good old fashion feeler gauge, set the adjustment screw to the current level of one of the knives. I checked the rest to find they were right on the money. I never moved them during the restore, so the last guy set them perfect.
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_

Set it off for the glue to dry.

The final steps were some light sanding and a coat of BLO, and resetting for blade height.
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-- Master hand plane hoarder. - http://timetestedtools.com



18 comments so far

View chrisstef's profile

chrisstef

11479 posts in 1759 days


#1 posted 07-26-2012 02:47 PM

Very crafty on your part Don … let the chips fly!

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

View Brit's profile

Brit

5310 posts in 1595 days


#2 posted 07-26-2012 04:29 PM

Great jig Don. Now what are you going to do with the money you saved, or have you already spent it several time over? :o)

-- Andy -- Old Chinese proverb say: If you think something can't be done, don't interrupt man who is doing it.

View Don W's profile

Don W

15572 posts in 1320 days


#3 posted 07-26-2012 04:53 PM

Andy, I’m not sure it counts when you’re saving money you didn’t have to spend in the first place.

If you took a single item or 2, I could have paid retail and been done with it. When you look at it over all, if I had to pay full price for everything in my shop, my shop would be pretty empty. So maybe I enjoy this kind of stuff because Subconsciously my mind knows its the only way I’ll get it. Either way, it works out in the end.

-- Master hand plane hoarder. - http://timetestedtools.com

View Brit's profile

Brit

5310 posts in 1595 days


#4 posted 07-26-2012 05:14 PM

I’m the same Don.

-- Andy -- Old Chinese proverb say: If you think something can't be done, don't interrupt man who is doing it.

View ptweedy's profile

ptweedy

75 posts in 2146 days


#5 posted 07-26-2012 05:25 PM

don I’m confused. Does the jig index off the cutting head or the plate that seems to surround the head. If it indexs off the head then the same design could be used for a jointer. I will give it a try, thanks phil

View Don W's profile

Don W

15572 posts in 1320 days


#6 posted 07-26-2012 05:29 PM

it indexs off the cutting head

-- Master hand plane hoarder. - http://timetestedtools.com

View barecycles's profile

barecycles

253 posts in 1081 days


#7 posted 07-26-2012 09:16 PM

Very nice Don.

But…if saving money you didn’t have to spend in the first place doesn’t count, then I’m in big trouble!

-- Sweeping up sawdust in Texas

View Jamie Speirs's profile

Jamie Speirs

4163 posts in 1609 days


#8 posted 07-26-2012 09:21 PM

I’m always in trouble :)

-- Who is the happiest of men? He who values the merits of others, and in their pleasure takes joy, even as though 'twere his own. --Johann Wolfgang von Goethe

View Dave's profile

Dave

11205 posts in 1593 days


#9 posted 07-27-2012 01:23 AM

Don slap a patten on it and name it. Sell it to Stumpy and make a fortune.
Good jig Don. That is American ingenuity at its best.

-- Superdav "No matter where you go - there you are." http://chiselandforge.com

View mafe's profile

mafe

9690 posts in 1842 days


#10 posted 07-27-2012 09:13 AM

Fine jig, now they can be easy set.
Best thoughts,
Mads

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View Don W's profile

Don W

15572 posts in 1320 days


#11 posted 07-27-2012 12:14 PM

maybe I should checker it Dave!! :-)

-- Master hand plane hoarder. - http://timetestedtools.com

View Mauricio's profile

Mauricio

6902 posts in 1904 days


#12 posted 07-27-2012 06:53 PM

Sweet jig Don!

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View Dave's profile

Dave

11205 posts in 1593 days


#13 posted 07-27-2012 10:26 PM

I’ll buy 2!

-- Superdav "No matter where you go - there you are." http://chiselandforge.com

View UKCat's profile

UKCat

82 posts in 820 days


#14 posted 12-03-2012 03:56 PM

That’s a nice looking jig you made Don. I may have to try this myself.

View UKCat's profile

UKCat

82 posts in 820 days


#15 posted 01-30-2013 06:41 PM

Thanks for the idea Don. I made one similar to yours and it works just fine. A lot better than spending a lot of money for something that doesn’t get used very often.

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