Machining for port work

[lwhaples]

Yours make my Clausing look yuck,key.

 

[huskihl]

.... and workin' on his MAGAZINE articles.

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Gotta love it when a dood drops a middle finger meme in his own forum lol

 

[Al Smith]

If I can get the pics to load this shows boring out a Mac 125 cylinder on a Bridgeport mill .I installeda cast iron sleeve made from grade 50 gray cast iron .The same stuff Harley Used for flat head cylinders

 

[Al Smith]

This is the set up I use to shave the bottom of a cylinder .A piece of 1" cold roll stock .threaded 3/4" inch with a screw on arbor for whatever size the cylinder is .Cylinder I think is a Stihl 038 AV

 

[Moparmyway]

I like the aluminum mandrels

 

[Al Smith]

Kind of funny on the Mac cylinder .It took me longer to make the side holding fixture and do the set than it did to make the bore cut .That boring tool is make from the axle of a heavy morter mixer with a number 2 Morse taper that fits in the drawbar type spindle .Ya gotta be a junk yard dawg to do this stuff and have a vivid imagination .--guilty on both counts.

 

[Al Smith]

I've seen people use just about any thing you can imagine .Walnut ,steel with a screw through the exhaust port .They all work .

 

[GoBigBlue1984]

I've seen people use just about any thing you can imagine .Walnut ,steel with a screw through the exhaust port .They all work .

Screw through exhaust port.......never thought of that (essentially a lathe dog) another idea that I'll use, thanks again guys

 

[huskihl]

Kind of funny on the Mac cylinder .It took me longer to make the side holding fixture and do the set than it did to make the bore cut .That boring tool is make from the axle of a heavy morter mixer with a number 2 Morse taper that fits in the drawbar type spindle .Ya gotta be a junk yard dawg to do this stuff and have a vivid imagination .--guilty on both counts.

A 2x4, a hole saw, and a hss cutter. Bolt the holes together. Chuck it up in a drill locked in a vise. Turn it in the drill while truing it up with a belt sander. Once it's the right size, mill out for the cutter with the dremel. That was my first squish mandrel many years ago. Worked just fine too

 

[Al Smith]

If you get the idea to make a turning mandrel it's got to be tight in the bore .Else it will slop around like a BB in a box car and not finish out right .Those I made of nylon fit tight as a glove .

 

[GoBigBlue1984]

If you get the idea to make a turning mandrel it's got to be tight in the bore .Else it will slop around like a BB in a box car and not finish out right .Those I made of nylon fit tight as a glove .

I usually aim for a thou under sometimes two. Spray some slick 50 on the plastic mandrel and fits just like it does at home. Hell, who am I kidding about that second part lol

 

[Deets066]

This is great stuff fellas! This is where I was hoping this thread would go.

They had a delay shipping my boring bar but it should be here soon. And thanks to Giant member I have another 024S jug to destroy.

 

[Al Smith]

One thing I forgot to mention .Those nylons arbors go clear in to the head deck but leave about 1/4" to 3/8" free space near the flange end .That way the chamfer can be cut in the same set up rather than fiddling around later with a die grinder

 

[Al Smith]

I usually aim for a thou under sometimes two. Spray some slick 50 on the plastic mandrel and fits just like it does at home. Hell, who am I kidding about that second part lol

Well not to get too explicit but KY makes this stuff------

 

[GoBigBlue1984]

Well not to get too explicit but KY makes this stuff------

That wasn't what I was getting at........but........I digress.

 

[Redfin]

Ive said it before but you fellas are killin me with the machine work. Ive got to get setup. Im still reading along.

 

[czar800]

All of you guys has some very nice Equipment. I would just love to sweep the floors of your shops and pick up the scraps that could be kicked underneath some of those machines!!!
As most of you know I'm not so high tech.... So I'll post up my "machine" I use!

 

[MG2186]

All of you guys has some very nice Equipment. I would just love to sweep the floors of your shops and pick up the scraps that could be kicked underneath some of those machines!!!
As most of you know I'm not so high tech.... So I'll post up my "machine" I use!

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Must have a lathe to be able to make your mandrel?


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[czar800]

Must have a lathe to be able to make your mandrel?


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No lathe, just good friends!

 

[MG2186]

No lathe, just good friends!

That's always nice too


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