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Aligning jointer tables and shelix cutter head

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Forum topic by Holbs posted 09-18-2019 03:58 PM 333 views 0 times favorited 7 replies Add to Favorites Watch
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Holbs

2247 posts in 2544 days


09-18-2019 03:58 PM

I have a quick question regarding making jointer tables coplanar after installing shelix cutter head from 3 knife cutter head. With the three knife cutter head you could make jointer tables coplanar and adjust the knives for that perfect fit. Do I now have to align tables using shelix cutter head as starting reference?

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"


7 replies so far

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Aj2

2499 posts in 2312 days


#1 posted 09-18-2019 04:45 PM

No, it can be done but it’s very difficult esp if you don’t have precision straight edges.
Shim up the head on it’s low side. Don’t mess with the coplane of the tables.

Good Luck

-- Aj

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therealSteveN

3927 posts in 1089 days


#2 posted 09-18-2019 04:57 PM

Putting one in you needed to drop the tables, both in and out feed. I raised both up after it was in, so a straightedge laying on both tables, just touched the cutter where the straightedge went across.

Then I dropped the outfeed side about 1/8”, not a lot. I used a piece of fairly flat stock 24” that I had already jointed, and ran it in till it cut maybe 6” onto the outfeed table.

Then I just moved the infeed, so it totally supported the portion on it, and it still was just making contact with the outfeed.

Got another piece of stock, and ran it across like I would to joint it, and it was fine. One of the small things you don’t want to forget is you took off the fence. Now I just hardly ever tilt a jointer fence, so you have to resquare it to the deck. Either that or I about guarantee you’ll be jointing a bevel on everything.

That was at first, then I went back and redid the entire thing, just dropping the outfeed around 1/16. After that I was much happier with the results.

-- Think safe, be safe

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Holbs

2247 posts in 2544 days


#3 posted 09-18-2019 05:10 PM

Okay so I guess it does not affect safety aspect about raising cutterhead a couple thousand or so if tables are already coplanar. Which mine are not since I did have to drop both tables for removal and installation.
Since I have to redo coplanar and align cutter head I guess I will simply reference outfeed to cutterhead and lower outfeed table the suggested depth (will have to revisit the suggested depth for outfeed table being lower than cutters). And then using outfeed as reference to the infeed table to make all coplanar

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

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Aj2

2499 posts in 2312 days


#4 posted 09-18-2019 06:16 PM

Let’s be clear on alignment of tables. Almost all jointers have table that will adjust up or down with a hand wheels or lever.
Using them is perfectly ok and should not affect the coplaner of the tables. One might be higher or lower but still in the same or very close plane.
Jointers with Dt ways are not really meant to be adjusted with shims but can be as a last resort.
The Dj jointers with cams in the corners can be adjusted if they need but only if you have a good straight edge and clear picture of what going on.
What type of jointer do you have Holbs.

-- Aj

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Holbs

2247 posts in 2544 days


#5 posted 09-18-2019 06:22 PM

2001 clone era. 8” geetech dovetail way jointer.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

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Aj2

2499 posts in 2312 days


#6 posted 09-18-2019 07:41 PM

Ok I know exactly what that is. I had one about ten years ago with a helical Head it had six rows of nine total 54 inserts.
What you want to do is to just snug up the gib screw with the jam nut. It should be tight but not so tight you cannot move the table up or down.
That should bring the tables back into alignment just like they were set up at the factory.If it doesn’t you might have gotten some crud in the ways it doesn’t take much to goof up the fit.
If that goes well raise up the outfeed so it just barely touches the bottom of a ruler on the heads highest side.
Then shim up the lowest side of the heads bearing block.
The jointer I had there was a nut that I could loosen and slip shims under.
Here’s a pic that shows gib screws with jam nut adjust both carefully.
Good Luck

-- Aj

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Aj2

2499 posts in 2312 days


#7 posted 09-18-2019 07:44 PM

Also in the pic it shows place shims here on both sides. Disregard this until you absolutely have to .
Your shims should go under the bearing block.
Good Luck

-- Aj

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