MadModder

The Shop => Tools => Topic started by: Xldevil on March 12, 2010, 01:27:53 PM

Title: Little surface gauge-H.Hall design
Post by: Xldevil on March 12, 2010, 01:27:53 PM: Hello.
I´m trying to improve my skills and bought H.Hall´s book:Lathework-a complete course.
For my first project,I´m building the little surface gauge.
Now that it comes to the cut that has to be sawn in the base as a part of the adjustment fixture,I´m wondering if it´s meant to be circular or just at one side.The drawing and the text is not that clear to me.
Did anyone build that gauge too and can give me a clue?
I´ve found to pictures of a finished gauge:
http://images.google.de/images?q=surface%20gauge&um=1&ie=UTF-8&sa=N&hl=de&tab=wi
Last row,the one at flickr.com.with the round base.
The V-groove, that is meant to camouflage the unsightly handsawn cut,is going all around;but I can´t see the sawn cut in itself.
Anyway,here are some pictures of my current progress:

(http://up.picr.de/3947121.jpg)

The base is turned already.Trying to level the base for flycutting the flat and drilling the holes.

(http://s1.up.picr.de/3947122.jpg)

(http://s2.up.picr.de/3947123.jpg)
Holes drilled,than deburred.
(http://s3.up.picr.de/3947124.jpg)
Turning the necessary thin piece collet.

Cheers,Ralph
Title: Re: Little surface gauge-H.Hall design
Post by: No1_sonuk on March 12, 2010, 03:06:29 PM: The cuts are straight across, leaving a 2mm piece of material to act as a "hinge".

The top, right drawing on page 19 is a cross-section through the cut, and shows the 2mm piece with diagonal hatching lines.
Title: Re: Little surface gauge-H.Hall design
Post by: Xldevil on March 12, 2010, 04:21:50 PM: Quote from: No1_sonuk on March 12, 2010, 03:06:29 PM
The cuts are straight across, leaving a 2mm piece of material to act as a "hinge".

The top, right drawing on page 19 is a cross-section through the cut, and shows the 2mm piece with diagonal hatching lines.
Hello.
You don´t waste any time to exchange pleasantries.
Anyhow,thank you for your help.
ASFAICS the cross section drawing shows only one straight cut on the left side.If I got you right,I have to saw 4 straight across cuts,one on each "side",correct ?And then there should only last a hinge of 2mm in the middle of the base? :scratch:
Regards,Ralph
Title: Re: Little surface gauge-H.Hall design
Post by: No1_sonuk on March 12, 2010, 05:12:21 PM: Hey,

Looks like 2 cuts to me, one shallow on the left, and one very deep on the right. The 2 "ends" of the hinge are formed by the initial turning of the groove.
Title: Re: Little surface gauge-H.Hall design
Post by: Xldevil on March 21, 2010, 01:12:55 PM: (http://up.picr.de/4001733.jpg)
The brass to make the adjustment bush is on the lathe
Title: Re: Little surface gauge-H.Hall design
Post by: Xldevil on March 29, 2010, 01:12:53 PM: Hello.
To come to an end,the gauge is finished.
More or less,the "fine adjustment" seems to be useless.Maybe I did something wrong?
Anyway,the making offered me some good options to improve my skills.
My next and more demanding project will be a rear toolpost for my Super 7.
Cheers,Ralph

(http://up.picr.de/4051089.jpg)

(http://s2.up.picr.de/4051095.jpg)
Title: Re: Little surface gauge-H.Hall design
Post by: Rob.Wilson on March 29, 2010, 03:11:55 PM: Hi Ralph :clap: :clap: :clap: :clap:

That looks a handy gauge :thumbup:

cheers Rob
Title: Re: Little surface gauge-H.Hall design
Post by: Stilldrillin on March 29, 2010, 03:57:31 PM: Very nicely done Ralph! :clap:

That looks purposeful, solid, chunky........ :thumbup:

Probably much more use to the likes of us, than my full size/ oversize one, made as an apprentice in 1960. ::)

David D