Jerry,

Let me explain it from a different perspective- from how I understand it and what has happened to me. I rarely use my jointer as a planer, but "user" support and feeding for me is the same whether I'm planing or jointing.

Machine- Yes the settings need to be set and right. The outfeed table is where the finished edge of the work rests. The cutter needs to be the same height as the outfeed table.
- If it's too low- it goes across the cutter > hits the outfeed table leading edge > finally pops up over it, which then raises that edge of the work and higher on the cutter >> causing leading edge sipe.
- If it's high- It goes over the cutter > is unsupported by the outfeed table until it over centers in balance, then at the end gets trailing end sipe. Because of the inconsistency/unsupported problem, the edge is not straight... wavy.

Stock feeding and support.
- I have to slow down and provide good support "on" the infeed table coming into a cut. In not, then I end up with leading edge sipe.
- Once I get enough past the cutter I transition support to the outfeed table.
- If I press down onto the stock at the end of the pass I'll end up with sipe on the trailing end.

In your anology, you said unsupported, then it drops between. If the cutter is adjusted to the outfeed table, the depth of cut is the infeed table heigth <> The "drop" you said can't happen unless you are not supporting it to the infeed or outfeed tables (depending where you are in the cut). Right?

The machine is doing the same cut, whether you have that stock on edge or flat.
*** You said yourself that you feed and support it differently if flat or on edge? Why?

You say when you do flat you have no problems. If you did on edge with the same techniques as you do flat on that machine, how does it come out?

Tell me if I should draw a diagram to make any of that easier to understand...

 

Jerry,

Let me explain it from a different perspective- from how I understand it and what has happened to me. I rarely use my jointer as a planer, but "user" support and feeding for me is the same whether I'm planing or jointing.

Machine- Yes the settings need to be set and right. The outfeed table is where the finished edge of the work rests. The cutter needs to be the same height as the outfeed table.
- If it's too low- it goes across the cutter > hits the outfeed table leading edge > finally pops up over it, which then raises that edge of the work and higher on the cutter >> causing leading edge sipe.
- If it's high- It goes over the cutter > is unsupported by the outfeed table until it over centers in balance, then at the end gets trailing end sipe. Because of the inconsistency/unsupported problem, the edge is not straight... wavy.






































































Stock feeding and support.
- I have to slow down and provide good support "on" the infeed table coming into a cut. In not, then I end up with leading edge sipe.
- Once I get enough past the cutter I transition support to the outfeed table.
- If I press down onto the stock at the end of the pass I'll end up with sipe on the trailing end.

In your anology, you said unsupported, then it drops between. If the cutter is adjusted to the outfeed table, the depth of cut is the infeed table heigth <> The "drop" you said can't happen unless you are not supporting it to the infeed or outfeed tables (depending where you are in the cut). Right?

The machine is doing the same cut, whether you have that stock on edge or flat.
*** You said yourself that you feed and support it differently if flat or on edge? Why?

You say when you do flat you have no problems. If you did on edge with the same techniques as you do flat on that machine, how does it come out?

Tell me if I should draw a diagram to make any of that easier to understand...

Let's take one point at a time, first in regard to getting snipe when cutting the edge of the board and not on the face. As I stated, the jointer has spirial cutters. When cutting on the edge of a work piece only one cutter is doing the cutting, it is cutting like a jointer with straight blades so that after one blade cuts and passes, there is a blank spot until the next the cutter comes up and begins to cut. That spot between the cutters is where the workpiece drops down on the to low outfeed table and is in that possion when the next cutter arrives and cuts to deep. Let's agree on or disagree on this before we go further just to keep things simpler. I am saying that I'm right on this point, but if for some reason you are not familiar with sprial cutters it might make a difference in how you see thing, I am not at argueing with you only wanted to be clear on the matter and I do appreciate you input and willingness to help me.

Jerry

 

Jerry I would guess you are right about the Spiral cutters. I have regular jointer blades so don't have hands on expierience with the spiral cutters but on paper your theory makes sense to me. Good luck.

 

Jim, the configuration of the spiral cutters is rather interesting and is a bit difficult to explain. I do like them, or think that I will, I have read about how smooth they cut, but really can't seen any difference between them the straight blades on my little bench jointer that has straight blades. I have had and used the little bench jointer for a couple of years on and off and see not difference in the quality of the cut surface now compared to what it was when the jointer was new. As little as I use a jointer, I should neverf have to replace the cutter in the new jointer in my life time.

I do believe that we are on the same page in regard to the snipe issue. It took me a bit of time to catch on to what was going on. The main issue is, as the owner's manual says, adjust the outfeed table to exactly the same height as is the the height of the cuttes. If the table is even slightly higher the workpiee will bump the outfeed table on the leading edge. To low and well, no need to reiterate theissue, but the issue is to get that adjustment dead on and until I got the idea of how to make the very fine adjustment with this peticular jointer which made making the ajustment possible. Anyway, being able to exchange our thoughts on this forum is certainly nice and adds to the enjoyment of our interest in woodworking.

Jerry