Wood max 8m infeed problem

[5030]

Not here to debate anything, candidly I don't care. All I know is what I do to chipper knives (and get paid for it too).

 

[grsthegreat]

I've never seen a CNC knife sharpener. All manual as far as I know of. No reason for CNC, you aren't machining anything. Basically, you jig the knives, spark the grinding wheel on the angled face, dial down a couple thou and remove material, rinse and repeat until the face and cut edge is uniform. One thing I do when I sharpen them is I take a DMT diamond whetstone and remove the backside burr that develops when grinding. Whey you remove the burr, you can shave with a sharpened knife. I've cut myself many times on sharpened knives. I tend to apply 2 layers of masking tape to the finished bevelled edge so I don't slice myself. Very, very sharp.

Not familiar with a Makita either.

I guess it’s not actually CNC, but it is automated. The guy I used had a unit that could sharpen about 6 blades at one time. It’s similar to this unit. There was one guy in town that had similar unit. He has since moved out of state.

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[sea2summit]

Then the included angle on the knives is wrong. Should be between 26 and 28 degrees. I must ask however, what did you set the knife to anvil clearance at? Hint, use an old credit card to set the clearance.

How you set the knives in a commercial chipper, old credit card.

I don't own a chipper, I roast my stuff, but I sure as hell sharpen a boatload of chipper knives.

Thank you for clarifying you don’t actually own one and don’t know how these work for setting the blades.

 

[5030]

Thank you for clarifying you don’t actually own one and don’t know how these work for setting the blades.

Not exactly. I DID own one for years and sold it for what I paid for it actually. I find it much easier and less time consuming to roast the wood. Besides, I'm a pyro.

How I got into sharpening knives in the first place. No one around here did it so I inquired with tree companies about who sharpened their knives and in as much as I own the machine tools (ie: large surface grinder, it was simply a matter of obtaining a tilt table for the grinder bed. Nothing more than one piece of additional tooling.

The table allows me to jig and sharpen the knives at any angle I want to set it at. I have from sharpening 100's of chipper knives that the included angle across all makes is between 26 and 28 degrees. Chipmore, Bandit, CMC or whatever.

I know exactly from experience and precision angular measurement with the included angle should be. Most likely something you don't have the capability to determine in the first place.

I also know from my personal experience and from talking to various tree companies I sharpen knives for, what the clearance between the knife and the anvil should be. All the operators I talked to use an old credit card to set the knife to anvil clearance.

I'd say YOU are the one who don't know, not me.

 

[sea2summit]

I'd say YOU are the one who don't know, not me.

You seem to say that about a lot of people and situations.

 

[TNLogan]

Reading several replies to others' ideas it sounds like this is mainly a problem with green viny schtuffe, right?
If so: I gave up doing any viny material in my 8M. It wraps as you've noticed and has a tendency to clog the outlet.
I remind myself that the 8M is a wood chipper, not a do-it-all trash grinder, and pile the viny crap for a quick burn.
As for bark joining the tangle: I have some problems with tulip poplar and eastern red cedar. I just have to be very watchful.