开云体育

Hi everyone,

I have a stupid question. I received my 7x12 mini lathe a couple
weeks ago, I ordered my cutting blades from harbor freight and they
came in today. Guess I was so excited about ordering my hhs cutting
bits that I realy didn't read the sales advertisement that well. I
thought I would get the same size cutting bits (got the 5 pc set)
I knew i was getting a cut off bit but i thought the other 4 bits
were 1/4" bits.

This is what I got: 1ea) 1/2 x 1/16 x 4 1/2
1ea) 1/8 x 2 1/2
1ea) 3/16 x 2 1/2
1ea) 1/4 x 2 1/2
1ea) 1/4 x 2 1/2 ( round bit )

So I guess what my question is what is the 1/4" round bit used for?

What is the small 1/8" bit used for, some small delicate work?

Thank you for your help in answering these question.

Kelvin

Kevin,
I think the best thing I can do is point you to some books:

Machining Fundamentals John R. Walker (Hardcover, 1982)

22nd Edtion Machinery's Handbook 1984


Both can Found on Ebay or Half.ebay.com

These will help you al ot.

Jerry

The round bits are nice in shop-made boring bars; easier to make a
round hole than a square hole (ease of manufacture is offset by
difficulty of aligning tool.)
On the 7x10 group, there are links to downloadable USN & USAR
training manuals and older, public domain texts.

Roy
--- In 7x12minilathe@..., "lecompte126"
<lecompte126@h...> wrote:

Hi everyone,

I have a stupid question. I received my 7x12 mini lathe a couple
weeks ago, I ordered my cutting blades from harbor freight and they
came in today. Guess I was so excited about ordering my hhs

cutting

bits that I realy didn't read the sales advertisement that well. I
thought I would get the same size cutting bits (got the 5 pc set)
I knew i was getting a cut off bit but i thought the other 4 bits
were 1/4" bits.

This is what I got: 1ea) 1/2 x 1/16 x 4 1/2
1ea) 1/8 x 2 1/2
1ea) 3/16 x 2 1/2
1ea) 1/4 x 2 1/2
1ea) 1/4 x 2 1/2 ( round bit )

So I guess what my question is what is the 1/4" round bit used for?

What is the small 1/8" bit used for, some small delicate work?

Thank you for your help in answering these question.

Kelvin

Roy,
Could you point the way to those government publications? It may
help us all.

Jerry

lecompte126 wrote:

What is the small 1/8" bit used for, some small delicate work?

Some small boring bars use 1/8" bits. I got one from Grizzly that required them.
Regards
Bob

Jerry,
Here's a direct link to the USAR manual:


Here's the University of Michigan digital collection; "Modern
Machine Shop Practice" vols 1&2 & "The Advanced Machinist" are in
here:


And a link to the USN manual (I could have sworn there was a link
on the 7x10 group):


Roy
--- In 7x12minilathe@..., Jerry Smith <jfsmith@a...>
wrote:

Roy,
Could you point the way to those government publications?

It may

help us all.

Jerry

At 11:58 PM 6/25/2003, you wrote:

The round bits are nice in shop-made boring bars; easier to

make a

round hole than a square hole (ease of manufacture is offset by
difficulty of aligning tool.)
On the 7x10 group, there are links to downloadable USN & USAR
training manuals and older, public domain texts.

Roy

Roy,
I knew of the Army one, it's not just for reserves(USAR), but the
MSU site is great.

Jerry

Here's a link to the Reference section of the
mini-lathe.com links page. There are many useful links
there, including the ones to the Army manuals.



Frank Hoose


--- Jerry Smith <jfsmith@...> wrote:

Roy,
Could you point the way to those government
publications? It may
help us all.

Jerry

At 11:58 PM 6/25/2003, you wrote:

The round bits are nice in shop-made boring

bars; easier to make a

round hole than a square hole (ease of manufacture

is offset by

difficulty of aligning tool.)
On the 7x10 group, there are links to

downloadable USN & USAR

training manuals and older, public domain texts.

Roy

[Non-text portions of this message have been
removed]


------------------------ Yahoo! Groups Sponsor

To unsubscribe from this group, send an email to:
7x12minilathe-unsubscribe@...



Your use of Yahoo! Groups is subject to

__________________________________
Do you Yahoo!?
SBC Yahoo! DSL - Now only $29.95 per month!