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Model Engineering in UK - Model engineering, metal crafts in UK
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Posted by Mark Rand on January 24, 2008, 2:05 pm
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On Thu, 24 Jan 2008 07:46:10 +0000, Charles Ping
>>
>>
>Glad I'm not alone.
>
>I have Michael Morgan's book on scraping and as you say it's much more
>practical.
>
>Regards
>
>Charles
I have the Morgan book and the video, as well as Connelly. Whilst Morgan Is
good for learning scraping, its coverage of alignment and reconditioning work
is close to non-existent. Without understanding the importance of the
alignment part of the job right from the start, you can end up with perfectly
flat surfaces that are all cockeyed.
Of course, all of my tools are still within the manufacturers warranty and in
perfect condition. :-)
Actually, the newest machine I own is actually the long bed ML7B, which cost
Father £168 10/5 in January 1966, so reconditioning is of some interest to
me...
Mark Rand
RTFM
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Posted by Richard on January 28, 2008, 8:24 am
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> I have probs with a new computer and Orange and
>such.
>So, my friends, this getting a copy of the excellent Forrest Addy
>advice is a bit of a pain to you all.
I believe this may be the reference
http://www.practicalmachinist.com/vb/showthread.php?t=89827
Richard
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Posted by ravensworth2674 on January 28, 2008, 10:09 am
Please log in for more thread options > > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0I have probs with a new computer and =
Orange and
> >such.
> >So, my friends, this getting a copy of the excellent Forrest Addy
> >advice is a bit of a pain to you all.
>
> I believe this may be the reference
>
> http://www.practicalmachinist.com/vb/showthread.php?t=3D89827
>
> Richard
Thanks, Richard, but there is a lot more- somwhere.
There is also a reference to how he used green grade diamond paste to
lap tungsten carbide inserts and also how he used a jig of sorts to
achieve negative rake and the controlled curvature of the cutting
edge.
I am wondering whether using scraping is what is needed for more.
I did Johnoder and got details of another jig
On Homeshop Machinist BBS where I write as Aviemoron has a series
running about diamond use on DE grinders.
OK, they are the wrong voltage and not in UK but that should not be
impossible to make something up.
I am looking at my Kennet which is gathering rosebuds or whatever
under my bench. Humn, humn?
This is a huge subject over the Pond and Forrest has done scraping
classes.
I'm just a geezer with a memory. How long will it last? Not long!
Cheers
N
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Posted by Austin Shackles on January 24, 2008, 5:34 am
Please log in for more thread options On or around Thu, 24 Jan 2008 02:05:22 GMT, Trevor Jones
> Any companies in your area with a surface grinder that can skim the
>surfaces? Some things are better aproached from a mercenary perspective.
>The money spent will save an awful lot of time for using it!
I'm not averse to getting the local engineering types to work on it, they
have more equipment and knowledge. I might go and ask 'em.
As for wear and where it is, it seems unlikely to me that the wear is ONLY
in the strips and none on the saddle itself, although that's possible. It
would, of course, be simple to get the strips straight.
The problem, as I see it, is that unless you turn a wide variety of sizes,
the most of the movement of the cross-slide is over about 3", which must
lead to uneven wear on the saddle. In particular, the cross-slide is rarely
pulled back all the way, so the end nearest the operator is hardly touched.
now, I could adjust it "tight" so that it works in the bit that's normally
used, but is stiff at either end... if I make a special extra-short allen
key to get at the adjusting screws. I'll try that first, might be possible
to get it "good enough".
--
Austin Shackles. www.ddol-las.net my opinions are just that
Travel The Galaxy! Meet Fascinating Life Forms...
------------------------------------------------
>> http://www.schlockmercenary.com/ << ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!
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Posted by dm on March 6, 2008, 7:13 am
Please log in for more thread options how much difference is there between tight at the worn middle and tight at
the ends 1/8 of a turn? 16th of a turn?
derek
> On or around Thu, 24 Jan 2008 02:05:22 GMT, Trevor Jones
>
> > Any companies in your area with a surface grinder that can skim the
> >surfaces? Some things are better aproached from a mercenary perspective.
> >The money spent will save an awful lot of time for using it!
>
> I'm not averse to getting the local engineering types to work on it, they
> have more equipment and knowledge. I might go and ask 'em.
>
> As for wear and where it is, it seems unlikely to me that the wear is ONLY
> in the strips and none on the saddle itself, although that's possible. It
> would, of course, be simple to get the strips straight.
>
> The problem, as I see it, is that unless you turn a wide variety of sizes,
> the most of the movement of the cross-slide is over about 3", which must
> lead to uneven wear on the saddle. In particular, the cross-slide is
rarely
> pulled back all the way, so the end nearest the operator is hardly
touched.
>
> now, I could adjust it "tight" so that it works in the bit that's normally
> used, but is stiff at either end... if I make a special extra-short allen
> key to get at the adjusting screws. I'll try that first, might be
possible
> to get it "good enough".
> --
> Austin Shackles. www.ddol-las.net my opinions are just that
> Travel The Galaxy! Meet Fascinating Life Forms...
> ------------------------------------------------
> >> http://www.schlockmercenary.com/ << ...and Kill them.
> a webcartoon by Howard Tayler; I like it, maybe you will too!
>
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