Author Topic: Lathe for saw work  (Read 477 times)

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Offline EHP

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Re: Lathe for saw work
« Reply #10 on: November 24, 2016, 10:40:24 am »
One thing I also do is if parts are small then buy a real good smaller chuck and made a mandrel to mount it on that can be held by the larger chuck on your lathe , it saves a lot of switching stuff around and is accurate . I machine a set of jaws on my larger chucks as well to help with holding saw parts

Offline dannyupsolate

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Re: Lathe for saw work
« Reply #11 on: November 24, 2016, 01:46:33 pm »
 I use a drill chuck in my 4 jaw.

Offline mdavlee .

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Re: Lathe for saw work
« Reply #12 on: November 24, 2016, 09:00:51 pm »
That's a good idea. I'll have to get that set up

Offline Al Smith

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Re: Lathe for saw work
« Reply #13 on: November 27, 2016, 05:52:48 am »
An  amusing thing about chainsaws might be the irregular shapes and peoples ingenious methods of machining them .Some times it takes longer to make the holding fixtures than it does to machine the part.

Offline EHP

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Re: Lathe for saw work
« Reply #14 on: February 12, 2017, 02:02:02 pm »
that is true as I have seen me spend a lot of time to get a holder built do make machining  a part easy , if your doing lots of that same part then its worth it but when your doing pretty much one of a kind stuff it sometimes hardly seems worth it

Offline Al Smith

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Re: Lathe for saw work
« Reply #15 on: February 12, 2017, 04:47:21 pm »
I've seen pictures of really ingenious methods of mounting cylinders,bore side out to cut the chambers down and some crude as a fence post that seemed to work .I myself have never delved into it but I have a theory yet to be proven .By using a grooved face plate with a center and using studs .It would still take month of Sundays to dial in the part so it turns true .Probably two hours to tram it in and 15 minutes to make the cut .

Offline mdavlee .

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Re: Lathe for saw work
« Reply #16 on: February 13, 2017, 09:57:59 pm »
Took me over an hour to cut one on a lathe with a plate studs and independent 4 jaw. I cut by hand in about 15-30 minutes

Offline Al Smith

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Re: Lathe for saw work
« Reply #17 on: February 14, 2017, 05:16:12 pm »
I can't say aye or nay on cutting down the chamber .I'm not fully convinced it's the way to go .However should I ever try it I believe I could do it better with a milling machine than a lathe .

Again though you have to problem of how to mount the work piece .Not impossible of course just takes some time to think it through .

Offline mdavlee .

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Re: Lathe for saw work
« Reply #18 on: February 14, 2017, 06:51:51 pm »
It's not bad with a plate and 4 studs. Just takes forever to get zero runout up and down the bore. Best thing is if you wear out a piston you can put a new one in without machine work

Offline EHP

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Re: Lathe for saw work
« Reply #19 on: February 16, 2017, 11:03:59 am »
Im abit slow ok but this is what I did , I turned down a piece of alum. in a 3 jaw chuck , spun alum down so the its tight to bore size of jug, , with jug mounted on alum using the bore to be centered I then drilled the 4 holes that once threaded will hold the cylinder to the alum. so if you want to cut the squish band you can, its not perfect but it has you very close to center to start with

 

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