What lathe?

[7sleeper]

Here's a shot of my "razor sharp" tool. The ring end pins really did a number on it!

I think I went a little too far on the popup.

I was always wondering what these new strato saws are all about....:hmm3grin2orange:

7

 

[Bob Wright]

and your floor will look like mine :

Mine does in both steel and aluminum...Bob

 

[Bob Wright]

I have no indication what I'm doing

Looks like a good idea to have aametalmaster drive across the state and learn ya. I got a vacation coming up...Bob

 

[blsnelling]

The only thing I was REALLY trying to make was a good laugh, and laugh I have

 

[blsnelling]

Looks like a good idea to have aametalmaster drive across the state and learn ya. I got a vacation coming up...Bob

I'll take all the advice I can get!

 

[blsnelling]

I was always wondering what these new strato saws are all about....:hmm3grin2orange:

7

No, this isn't a strato. This is my new "Air-O-Ported" piston design. It's more efficient than traditional transfers in getting the fresh charge to the combustion chamber!

 

[Tzed250]

No, this isn't a strato. This is my new "Air-O-Ported" piston design. It's more efficient than traditional transfers in getting the fresh charge to the combustion chamber!

All you need is a reed valve on the top and you are in!!

 

[blsnelling]

All you need is a reed valve on the top and you are in!!

That might be a good idea. I did notice that there was quite a drop in compression!

 

[blsnelling]

I really like the idea of using inserts. Someone posted a link to these earlier. CCGT INSERTS They look to be a very good choice for aluminum. What holder would I need for these? The specific operations I'm looking at are cutting a popup piston and cutting the cylinder base from the back side, while on a mandrel.

Do you recommend steel, aluminum, or "plastic" mandrels?

 

[parrisw]

No no no, that's what's called a piston ported saw!

 

[parrisw]

I really like the idea of using inserts. Someone posted a link to these earlier. CCGT INSERTS They look to be a very good choice for aluminum. What holder would I need for these? The specific operations I'm looking at are cutting a popup piston and cutting the cylinder base from the back side, while on a mandrel.

Do you recommend steel, aluminum, or "plastic" mandrels?

I still stand by in saying use HSS, you'll have to learn how to sharpen them, but its not hard, you seem like a smart feller, it wont take much till you can grind out a bit. All my mandrel's are aluminum, I wouldn't use steel, harder and longer to machine, and I just don't like the fact of inserting a steel mandrel into the bore. Lots of people have success with plastic ones, I've never tried them.

 

[blsnelling]

Yes, I am a pretty fart smeller:hmm3grin2orange:

 

[Metals406]

Brad, I'm so proud of you right now I could !!

Your Redneck of the Month merit badge is in the mail.

 

[parrisw]

You can't beat this set for the price if you want to use inserts.

Tools4cheap LLC Online Machine Shop Tooling Store: Carbide Indexable Lathe Tool Set 1/2",Lathe Boring Bars and Indexable Cutting Tools

 

[blsnelling]

Doesn't look like those would hold the inserts I linked above.

 

[parrisw]

Yes, I am a pretty fart smeller:hmm3grin2orange:

Oh? You're one of them EH.

 

[parrisw]

Doesn't look like those would hold the inserts I linked above.

No, but that's why you would buy the inserts that they would hold!! LOL Then can be had for cheaper then the ones you listed.

 

[blsnelling]

Oh? You're one of them EH.

I was just kidding about the pretty part!

 

[blsnelling]

Is this the kind of holder I'd need to use those CCGT inserts? LINK

 

[Tzed250]

I really like the idea of using inserts. Someone posted a link to these earlier. CCGT INSERTS They look to be a very good choice for aluminum. What holder would I need for these? The specific operations I'm looking at are cutting a popup piston and cutting the cylinder base from the back side, while on a mandrel.

Do you recommend steel, aluminum, or "plastic" mandrels?

For the piston you would need a right hand turning tool. For the base you will need a left hand turning tool. For inserts to be worth it and effective you need to use much higher surface speed, which means higher spindle speed. Throwing a cylinder on a mandrel out of the machine at 600 rpm can send you to the ER or severely damage the lathe. It is best to get your feet on the ground with HSS, then move to indexable carbide when you get a handle on things.