Jump to content

Slip Trailing


Recommended Posts

Thanks Peter. I just read the article on slip / engobes and if I understand it right I can use underglaze in place of slip on a bisqued pot. I'm going to try Amaco Velvet Underglaze but want it to be raised like slip so think I need to add a flocculent such as vinegar. Are you familiar with this process?

Link to comment
Share on other sites

raised like slip so think I need to add a flocculent such as vinegar.

 

A rambling response based on too much theory and far too little practice.

 

In an ideal world you want to finish up with a mix with both

- the right consistency to trail

- and the right water:solids ratio to control the volume-loss on drying.

If you start with a dry mix you can control both over a significant range, as shown in this John Britt video:

 

 

If you are starting off with a premixed slip your options are more limited, as you cannot decrease the

water:solids ratio. Hence the comment:

Leach gives the useful tip to add vinegar to a trailing slip, particularly if it turns out to be rather more

runny than you wanted. The vinegar acts as a flocculent, and stiffens a slip in an amazing way, while

in fact diluting it so that it dries to a satisfying low relief.

http://www.ceramicartswa.asn.au/event/slip-slap-slop-janet-kovesi-watt

 

So my guess is that with a premix you may need to flocculate to get a good trailing consistency, but

the fired trail may be thinner than you expect (as the water:solids ratio is probably on the high side).

 

PS Have you seen the underglaze freebie, downloadable from:

http://ceramicartsdaily.org/free-gifts/underglaze-users-guide-how-to-use-underglazes-slip-trailers-ceramic-pens-and-underglaze-pencils/

 

 

Link to comment
Share on other sites

Thanks again Peter! What a wealth of information! I'm going to try the underglaze tonight and hope it works. I just hope that it's thick enough. I'm having trouble with my login - sometimes it lets me in but most times not. Need to fix that and then download my freebie.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.