Re: Bind threading
Is there a particular reason why this thread is called BIND threading ???
??
[email protected]> wrote:
By
mario mohl
·
#118548
·
|
Re: Bind threading
One other way to make it cut on one side is to leave the lathe in the standard set-up and advance the tool 1 unit toward or away from from the chuck and 2 units into the part. This advances the tool
By
paul mcclintic
·
#118547
·
|
Re: Bind threading
I just remembered why 29.5¡ã is used on light lathes to cut very corse threads.
Until this lathe , I away had heavy lathes and did not have worry about it.
Dave
By
davesmith1800
·
#118546
·
|
Re: Bind threading
I read and have try 29.5¡ã and straight both came out same.
The 30¡ã in the old books was use for feed so it feed 0.001 on dial it took off 0.001 on the diameter.
They use for tool post? grinding
By
davesmith1800
·
#118545
·
|
Re: Bind threading
I believe the 29 (or 29.5, should NOT be 30) topic has been discussed before.? You CAN go straight in, but there are cases where that can cause tearing or excess stress to the tool bit tip. This is
By
Charles Kinzer
·
#118544
·
|
Re: Bind threading
Good teaching image.
I fiddled with the 30 degree threading technique once.? ?I generally do well straight in.? ? May want to play with it more when time permits (not soon).
--
Lone Tree,
By
Craig Hopewell
·
#118543
·
|
Re: 123 blocks
Roy,
You have a good point with 123 blocks being completely hardened However, my
123 blocks were only case hardened but they were also really cheap I think
only $17 for a pair of them, not very good
By
T
·
#118542
·
|
Re: Thread dial
Here calculator for threading dials.
Keep to low numbers on gear as easier to use.
https://www.cgtk.co.uk/metalwork/calculators/threaddialindicator
Dave
By
davesmith1800
·
#118541
·
|
Re: White lead for centers and chucks
I don't remember the brand name, but, there was a plastic lamp that was available in white & red versions, with some plastic attaching hardware. The weird thing was that they required a special 4.5
By
Roy
·
#118540
·
|
Re: 123 blocks
Most, if not all of them are thru-hardened, not case hardened - it's quicker & easier to do that before finish grinding. The easy way to deal with minor problems in the holes is with a mounted point
By
Roy
·
#118539
·
|
Re: 123 blocks
I believe the blocks are only case hardened. I had to run a tap through
the pre-tapped holes to remove burrs. It wasn¡¯t an easy process and it¡¯s
possible to damage the tap in the process. I
By
T
·
#118538
·
|
Re: 123 blocks
No, the blocks are to hard for tapping.
george
By
[email protected]
·
#118537
·
|
Re: 123 blocks
"The other option is to run a tap through the thread holes to clean them
up."
CAN you run a tap through the holes? I always assumed they would destroy my
tap, since the blocks are hardened. (Or are
By
Miket_NYC
·
#118536
·
|
Re: 123 blocks
Thanks for that reference. Will read it later. Been looking for something like that. Anyway, just to clear some things up, the lms blocks have the unthreaded holes are all large enough to fit the
By
[email protected]
·
#118535
·
|
Re: White lead for centers and chucks
I remember that strap on light very well as a few of us in a cycling group related to Barnard's Cyclery in Oak Park, IL were given some prototypes to test and comment on.? This would have been circa
By
Charles Kinzer
·
#118534
·
|
Re: White lead for centers and chucks
Yup, I had one of those ankle strapped lights. And they were just good for the red light facing backwards. The front light was useless. I finally just basically taped a flashlight to the front bar.
By
[email protected]
·
#118533
·
|
Re: White lead for centers and chucks
Back when I was riding we would have never used one of those rub on the
tire generator lites on our sew-ups . SO someone came out with lite that
strapped on yer lower leg with a clear lens in front &
By
mike allen
·
#118532
·
|
Bind threading
Here a drawing on blind threading I talked about in past thread.
This good drawing.
I have not used the 30¡ã angle since 1970's.
Dave
By
davesmith1800
·
#118531
·
|
Thread dial
Does anyone have a threading dial chart for 2.0 mm lead screw.
I have gearing charts and for both metric and inch all the threads.
But lathe I purchased did not come with threading dial for metric
By
davesmith1800
·
#118530
·
|
Re: White lead for centers and chucks
It is interesting reading on bikes all the ways you have electric.
When look I look at it put a motor on bike 25 years ago? ? they call a moped ? and you need a license plate .
Dave
By
davesmith1800
·
#118529
·
Edited
|