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Post in 'The Gear' started by smokinj, May 2, 2013.
Ok whats the quickest way to sharpen this beast?
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I had bought an extra set of knives when we bought ours, had them changed last year. They told me to take the old knives to a person who sharpened saw blades.
Not much help am I!
I wonder if this would work on the DR.
Have you pull the knife out at all yet? How simple is it to get to them? This is my uncle unit and I will be there Sunday hoping its not an all day thing. I get the idea of how to sharpen it, just break down and puttiing it back together. Then actual getting something done. lol Hes my Dads age (Early 80's) and loaded in wood equiment.
One more question last year I ran maybe 100 cu ft through it and it was all season wood. Seem to be kinda dull. How would green stock work without sharpening?
I took mine in to the shop, they changed it. It should tell you in the manual. It looks like a bigger model than ours, sure nice to have for shipping up some smaller stuff.
Oh crap I am going in with hillbilly skills again......It is the biggest model dr makes and trailer mounted. Think I will just try and shoot the green stuff through there and see what happens. Way to much to tackle and try to figure out how to sharpen it. Its pretty well over grown there but its only an acre. Between him and my father there running me wot!
Very funny, I don't know what "wot" is but I get what your saying. I don't know anything about the chipers, but the chipper guys refuse to put any dead wood thru them. It dulls the cutters. I assume you can tell if it's dull. I don't know if hillbilly skills requires reading the manual, but thats where I would start. Most likely something like sharping a lawn mower blade.
Chipper blades are a bit differenernt than a mower blade. The should be ground with a flat bevel, not a hollow grind, and they absolutely must be kept cool. The perform best when they are sharpened evenly across the entire edge and all knives are matched.
I've run them on a surface grinder before and they come out super nice.
Often times with the small chippers, replacing the knives is more cost effective than sharpening. Some brands like Bear Cat have double edged knives that you can remove, flip, and reinstall.
"WOT" = Wide Open Throttle in the automotive/motorcycle world.
I think, I better start with a file.
Yea hilly skills is just that. Its my uncle's unit hard telling where that is. Time for Youtube university!
If you decide to do it more than once in a blue moon, a small grinder like this one might work out alright for the knives you would typically find in a 3-4" chipper. And I know you gotta have some other tools you could grind on it.
I was cleaning out my father's shop last year and found....Wait for it.......3 mike creates of files every file you can think of times couple 100. He didn't even know where they came from.
My uncles shop is the very same way. Last night I was looking for a socket that I could attach to my fathers cordless drill. He said he didn't have one. (Fixing a gate) Look in one cabinet a dewalt box about 18x24x4 inch every drill attachment dewalt makes. My dad look puzzled and said I never even know I had that.
Chipper blades, apx 30 deg sharpening angle, all blades should be the same size to keep drum balanced. the real key is to look closely at the back or flat side, use a straight edge to see if the backside of the cutting edge is rolled away from the straight edge, if it is you really need to get those reground past that point. Just putting an edge on them is only 1/2 the job. That rolled edge really slows down the cutting action and creates a very high load on the system. Hard on drive belts and fuel.
That work sharp unit is going to likely burn the cutting edge, not a good thing.
Yea Thanks Chris. I will leave it be for the time being. I got maybe 50 cu ft to run (Much wise) Sunday and lots of help. I wing it this round and run it dull. I got a pretty good idea how to pull it off (I think) but being in a hurry not good.