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Jointer setup question

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Forum topic by Beuford posted 01-17-2022 09:23 AM 352 views 0 times favorited 3 replies Add to Favorites Watch
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Beuford

39 posts in 453 days


01-17-2022 09:23 AM

I decided to replace the knives in my relatively new-to-me Powermatic 54 (not A or HH; built ~2000), but I ran into a problem.

As I had received (and been operating) the jointer, the outfeed table was zeroed to the top of the knife arc; everything worked fine and the depth gauge was pretty darn close.

When I replaced the blades I read the manual carefully, and it stated that the top of the knives should be no more than 0.015 inches above the body of the cutter head. To achieve this while at the same time zeroing the top of the knives to the top of the outfeed table I had to lower the outfeed table. I didn’t measure the height of the original blades relative to the cutter body, but it appears that they were much higher than the specified 0.015 inch.

Everything works fine now, but the “zero” on the infeed table reads at about 3/64ths of an inch (the picture below is with the infeed table 1/64th below the outfeed table).

Should I have instead zeroed the infeed table to the cut depth scale, then zeroed the outfeed table to the infeed table, then set the knife height to match the top of the outfeed table? This would result in the cut depth gauge being correct, but would also result in the knives being set approximately 0.060 inch above the cutter head body – contrary to the clear instructions in the manual:

Any suggestions?

Beuford


3 replies so far

View RClark's profile

RClark

291 posts in 3644 days


#1 posted 01-17-2022 10:05 AM

Is there any adjustment of the indicator itself? My old Delta jointer had the ability to loosen the cursor point to zero it during the alignment/tuning process.

To me, the important thing is that the top of the knife arc is level with the outfeed table. If you can do that AND follow the manufacturer’s warning about the knife/cutterhead parameter you included in your post, then that’s best and then you can align the infeed table and adjust the cursor appropriately.

-- Ray

View Robert's profile

Robert

4989 posts in 2940 days


#2 posted 01-17-2022 11:58 AM

I have never once in 30+ years ever used that gauge other than to adjust up or down a relative amount.

I don’t get why are you interested in a certain setting? You’re not dimensioning in a jointer.

If it matters that much put some tape on it and make some marks…….

-- Everything is a prototype thats why its one of a kind!!

View Kudzupatch's profile

Kudzupatch

395 posts in 2668 days


#3 posted 01-17-2022 01:41 PM

You can still use the gage as a guide. If you need to take say a 1/16 more you lower it a 1/16th from where it is.

In other words I wouldn’t worry about it being accurate. Mine happens to be but I just use it a reference, not an absolute measurement.

-- Jeff Horton * Kudzu Craft skin boats* www.kudzucraft.com

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