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Is anyone square grinding .325 chain?
.325 Square Ground???
- Thread starter rahtreelimbs
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Crofter
Addicted to ArboristSite
Haven't ground it but you can get in there with the flat style chisel bit file. Dont think the triangular style will work. It was a Stihl 33 RS which has a larger cutter than most .325 chain (3/16 would be the round file size) Even so you are just kissing the tie strap and the raker. One smooth little chain for a small saw!
Frank
Frank
ehp
Addicted to ArboristSite
I know one guy that won't be, me
Goran Carlstrom
ArboristSite Lurker
Square ground 0.325
Rick,
You can with favourable cutting result square file your 0.325 both full chisel or semichisel. The filing method is the same in both alternatives a "goofy" file and the best one is Vallorbe LC 2260-6 witch I have developed togeter with vallorbe. A filegauge is avaliable for 0.325 and sold by Consolidated Equipment in Wanvouver. Check with Mike acres E mail: [email protected]
Regards
Göran Carlström
ATOP Racing Cut
Sweden
PS: My link to my page are soon ready. www.atop.se
Rick,
You can with favourable cutting result square file your 0.325 both full chisel or semichisel. The filing method is the same in both alternatives a "goofy" file and the best one is Vallorbe LC 2260-6 witch I have developed togeter with vallorbe. A filegauge is avaliable for 0.325 and sold by Consolidated Equipment in Wanvouver. Check with Mike acres E mail: [email protected]
Regards
Göran Carlström
ATOP Racing Cut
Sweden
PS: My link to my page are soon ready. www.atop.se
Ok, this looks like advertising to me. Is this guy a sponsor? If not, sign him up.
Mike Acres
ArboristSite Operative
Goran is explaining that he has developed a method of filing the chain so that it cuts as well as or in some cases better then a square ground one. All will be revealed soon or you can contact Dennis Greffard for more details.
I cant imagine trying to cut with that profile cutter...looks horrendous, could be mighty grabby and rough-especially if there was any filing deviation ..as well, it would dull quickly.
I think I' m getting the hang of square filing...today my new PP7900 made the shortest work of a couple 125 foot wolfy firs in history,very possibly, 16 to 32 inches at a time, from the top down.
I think I' m getting the hang of square filing...today my new PP7900 made the shortest work of a couple 125 foot wolfy firs in history,very possibly, 16 to 32 inches at a time, from the top down.
Ed, sounds like you don't like .325 chain... I don't either.....
That's basically what Junkyard Dumbrowski did with his modified grinding wheel the other day, only in this case it's a steeper angle.
Looks to me like instead of the side of the tooth severing the fiber and the top peeling the result away it's just got the top peeling. Maybe it works okay on balsa...
Glen
Looks to me like instead of the side of the tooth severing the fiber and the top peeling the result away it's just got the top peeling. Maybe it works okay on balsa...
Glen
If the tooth in the pic was filed with the goofy file that I am familiar with it looks like the top plate and the side were filed at the same angle on the same plane across the flat of the file with the rounded edge being at the very bottom of the tooth. I dont have any idea how or if it would cut, but it would be simple to file.
Possibly I am looking at the pic wrong.
John
Possibly I am looking at the pic wrong.
John
I've tried that profile before using a round grinder with the wheel narrowed down and shaped steeply on the back edge. Nothing new or revolutionary there. It just make a really grabby chain.
Mike Acres
ArboristSite Operative
The picture I posted is of 3/8" chisel. I wanted to illustrate the end result of filing the chain with the tool we have for .325 chain. The testing we have done in our wood (coastal softwoods) with the 3/8" chain shows that the chain will cut faster than one filed with a round file. The chips are neat wafers, cleanly sheared off and large in size. The cut is not rough and there is no tendency to kick or grab. We are awaiting the tool for 3/8" chain and as all our tests so far have been on free hand filed chain expect the jig filed chain to be more accuarate and faster cutting. The phrase that was coined right after we did the first cutting was "looks like hell but cuts like hell"
The stay sharp time is presently being evaluated in the woods and we will have an answer to that question shortly. The file used is what is referred to as the goofy file. The idea of filing a chisel chain with that file is not new but having a jig that clamps onto the guide bar to give 100% accurate angles is.
The stay sharp time is presently being evaluated in the woods and we will have an answer to that question shortly. The file used is what is referred to as the goofy file. The idea of filing a chisel chain with that file is not new but having a jig that clamps onto the guide bar to give 100% accurate angles is.
Crofter
Addicted to ArboristSite
Mike Acres:
It would have been much better if it had been presented the way you have just done. I can see how it would be easier than chisel bit filing but I think I see a very exposed outside top corner. I amm interested in obtaining a few goofy files. If it stays sharp reasonably it might have some merit, but I dont think it will take the racing circuit by storm.
Frank
It would have been much better if it had been presented the way you have just done. I can see how it would be easier than chisel bit filing but I think I see a very exposed outside top corner. I amm interested in obtaining a few goofy files. If it stays sharp reasonably it might have some merit, but I dont think it will take the racing circuit by storm.
Frank
Like I said, just a bit steeper angle than <a href="/showthread.php?threadid=13374&postid=143550#post143550">John's</a>, complete with <a href="/showthread.php?threadid=13531&postid=147532&highlight=new+square+ground#post147532">video</a>.
Glen
Glen
Mike- we've modified some round filing jigs here to accept both goofy files and the thin Vallorbe double bevel files for square filing, again this is nothing new. I was doing that back in 1994.
sedanman
Just cut the piano!!
Mike, Please let us borrow your chain for evaluation at Dan Henrys get together. I'll pay shipping both ways. We just need a 72 driver .050 3/8 sample. There will be PLENTY of saws of different power levels capable of running that chain. Paul
P.S. I have some pictures of some saws that you don't have on your site. That didn't come out too clear, you have the saws just no pictures or the picture came out of a brochure. How do I ge the pictures to you?
P.S. I have some pictures of some saws that you don't have on your site. That didn't come out too clear, you have the saws just no pictures or the picture came out of a brochure. How do I ge the pictures to you?
Mike Acres
ArboristSite Operative
Paul: I sent an email about the chain.
I would like you to evaluate the cutting performance of it.
Mike
I would like you to evaluate the cutting performance of it.
Mike
ehp
Addicted to ArboristSite
This is my thinking so take it for what it is worth,
that tooth shown here wood not work very good
first your side plate angle is way to step and i mean way to step, now you say it cuts smooth boy you must be cutting very very soft wood , stick it in to some maple and see what you have left plus with that step of a side plate your eyes would be watering from the vibration and if your chain is not cutting smooth you will break alot of chains .
I cannot see that cutting any where even close to square ground , it just is not going to happen and if they can round file , they will give it a real go
that tooth shown here wood not work very good
first your side plate angle is way to step and i mean way to step, now you say it cuts smooth boy you must be cutting very very soft wood , stick it in to some maple and see what you have left plus with that step of a side plate your eyes would be watering from the vibration and if your chain is not cutting smooth you will break alot of chains .
I cannot see that cutting any where even close to square ground , it just is not going to happen and if they can round file , they will give it a real go
Dennis Cahoon
Addicted to ArboristSite
Filing jig
Mike Acres, the chisel filing jigs have been around along time. I also modified one to use a goofy or a 150 double ender.
The tooth you took a picture of is a hum-dinger! Good luck with those angles, way to much angle.
Mike Acres, the chisel filing jigs have been around along time. I also modified one to use a goofy or a 150 double ender.
The tooth you took a picture of is a hum-dinger! Good luck with those angles, way to much angle.
tony marks
Addicted to ArboristSite
id have to agree about that angle ..
i tried that myself.. it just didnt cut nearly as good as id hoped for..
course i didnt use the tools yall talking about... as i remember it created chips that nearly clogged
my chain up.im sure u will come up with somethin useful tho mike. good luck.
i tried that myself.. it just didnt cut nearly as good as id hoped for..
course i didnt use the tools yall talking about... as i remember it created chips that nearly clogged
my chain up.im sure u will come up with somethin useful tho mike. good luck.
