Philip Poburka on wed 6 sep 00
I think there would be difficulties in accurately Centering a Bisque piece
in a Wood (or Metal) Lathe: even having
the 'foot' centered, the rest may not be quite so centered at all.(Depends
on the piece, of course, - mine are often ovoid.)
A conventional three or four jaw Chuck, if padded with leather, 'might' do
it, IF the piece had a good (and rather thick) FOOT, and if ,in tighteneing
the chuck, the piece did not break...Very few woodworkers have three or four
jaw chucks for their Lathes.
Extemporaneous chucks made up for varied foot diameters could be got-up on a
faceplate, then a blunt 'live' Center brought up snug with a little pad.
That to me seems the most promising - for sake of argument.
A bisque piece could be held between Centers, with some sort of padding,
tho' this would seem to me to be not so good.
Bye either means, if tightened enough to really hold it, the bisque may well
break/crush.
If the piece were not quite exactly round, the nature of Lathes would likely
cause it to become so, and leave areas too thin, or untouched - not good if
the purpose is to trim very thin, and uniformly.
Bisque - especially 'low fired' Bisque- MAY be trimmed on a soft rubber pad
on a bat, on a 'Wheel', using Trim-Tools of particular hardness.
The Tools will 'float' with the mild out-of-round of a pot,
leaving the walls thinner, and evenly so.
If anyone is going to trim Bisque on a Lathe, a Metal Lathe will turn much
slower than Wood Lathes tend to do. 'Slower' might be a good idea.
If anyone DOES succeed at this Lathe Trimming of Pots, please let me know! I
would send a Cigar, AND congratulations!
I think, tho', that one would be happier, to do this on the Wheel.
Regards,
Philip
in L.V.Nev.
------Original Message------
From: "Morris, Marlene F."
To: CLAYART@LSV.CERAMICS.ORG
Sent: September 6, 2000 6:56:42 PM GMT
Subject: Re: Wood Lathes. Try turning clay
Hey Ivor,
Have I told you lately that you're a flippin' genius? This is just the
rationialization I needed to justify buying a mini-lathe. Thank you!
Have you actually done this? Do you prefer any particular brands for any
reason (hey, money's a good reason). Any particular chisels?
Thanks~
Marlene
-----Original Message-----
From: iandol [mailto:iandol@TELL.NET.AU]
Sent: Saturday, September 02, 2000 2:00 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Wood Lathes. Try turning clay
Lot of chat about turning wood. But has anyone used their wood lathe yet for
turning Porcelain bisque prior to glaze firing. I believe that is the way to
achieve an eggshell thin, fully translucent quality.
Ivor Lewis.
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
______________________________________________________________________________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
| |
|
