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Cut jointer knife from 6" to 5 1/8"

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Forum topic by chocked posted 12-27-2012 03:18 PM 1061 views 0 times favorited 13 replies Add to Favorites Watch
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chocked

37 posts in 789 days


12-27-2012 03:18 PM

Topic tags/keywords: question

Hi guys

Has anyone cut off part of a jointer knie?

Thanks,
Chocked

-- chocked Tn.


13 replies so far

View Bill White's profile

Bill White

3589 posts in 2713 days


#1 posted 12-27-2012 03:20 PM

On purpose? Why?
Help us help you.
Bill

-- bill@magraphics.us

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chocked

37 posts in 789 days


#2 posted 12-27-2012 03:23 PM

I have a 5 1/8” jointer and can’t find that size knives. I need to cut from a 6” knife without softening it.

-- chocked Tn.

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chocked

37 posts in 789 days


#3 posted 12-27-2012 03:29 PM

Hey Bill and everyone
the knives that came with this old Delta jointer are 5 1/8” x 5/8” x 1/8”. The numbers on the knives is C-3084-1 or I can’t make the last digit out.

Thanks

-- chocked Tn.

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chocked

37 posts in 789 days


#4 posted 12-27-2012 03:39 PM

Made an err

The jointer knives that came with it are 5 1/8” the # on the knives are – B/P 3034-13-D

Thanks,

-- chocked Tn.

View joeyinsouthaustin's profile

joeyinsouthaustin

1286 posts in 825 days


#5 posted 12-27-2012 03:48 PM

I would imagine that besides tempering, balance could be quite an issue. What is the serial on the jointer. Would it fit a standard 6” knife?? Or can you just have the knives it came with re sharpened?

Here are some options, or places to call American national knife
Infinity Tools

-- Who is John Galt?

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chocked

37 posts in 789 days


#6 posted 12-27-2012 03:55 PM

Hey John
Tried both of them. The numbers on the 5 1/8” knives that is in it is – B/P 3034-13-D.
They don’t match up any place I can find. That is why I thought I could maybe cutting some longer knives.
That could be expensive to try.

Thanks John

-- chocked Tn.

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joeyinsouthaustin

1286 posts in 825 days


#7 posted 12-27-2012 04:12 PM

Don’t think you could squeeze those 5 1/16×3/4×1/8 in??
5-1/16×3/4×1/8 1019 Duro – Set of 3. 23.80 (from american national) Your local sharpener might be able to take those down to 5/8. Or maybe your local sharpener is the person you need to ask how to cut down a set of 6”?

-- Who is John Galt?

View sprucegum's profile

sprucegum

323 posts in 750 days


#8 posted 12-27-2012 04:27 PM

I am not a metal expert but I do play around with my old south bend lathe sometimes. when I sharpen my lathe cutters I grind a few seconds and then dip them in water to cool and then grind some more. This alternating grind and cool prevents removing the temper. I think you could use this method to shorten you 6” knives to 5 1/8. I would use a cutting wheel on a small angle grinder to shorten them to around 5.25 then a bench grinder to finish the job. If you use a accurate means of measuring balance should not be a problem but you can weigh them to be sure.Just be sure to grind and cut a little and cool alot.

-- A tube of calk and a gallon of paint will make a carpenter what he ain't

View Don W's profile (online now)

Don W

15570 posts in 1320 days


#9 posted 12-27-2012 04:31 PM

any good cut off wheel should do the trick. Keep them wet and go slow. Wrap them in a wet cloth if you have to. I know I basically rewrote what sprucegum did, with some added content in there to.

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

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chocked

37 posts in 789 days


#10 posted 12-27-2012 04:36 PM

I am going to do some measuring to see if I can squeeze.
Thanks sprucegum I may have to go that route.
I also need some gibs but first things first. I know I will have to grind them.

-- chocked Tn.

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chocked

37 posts in 789 days


#11 posted 12-27-2012 05:08 PM

Well I can raze the out feed table high enough to fit the 3/4” wider knives in easy. Now my concern is will the gibs hold the higher knives.
Help!

Thanks

-- chocked Tn.

View joeyinsouthaustin's profile

joeyinsouthaustin

1286 posts in 825 days


#12 posted 12-27-2012 05:25 PM

I recently installed a set of 5/8” knives in my delta 6”, while my 3/4” were being sharpened. I didn’t notice a difference. I never get over the thought that they are just going to fly out every time I change, or tune the blades on my jointer. Don’t know if that is a confidence booster, but if they are properly installed, the gibs should hold. the difference in types of steel could change the weight as much as the difference in size??

-- Who is John Galt?

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joeyinsouthaustin

1286 posts in 825 days


#13 posted 12-27-2012 05:27 PM

I did check byrd. It may be worth calling them… put a shelix head on that thing and never worry again!!

-- Who is John Galt?

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