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How to stop stamp sticking to clay


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#1 High Bridge Pottery

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Posted 23 April 2013 - 07:45 AM

I need some help, got a ceramics stamp that has a lot of small detail. When pressed into clay it deforms the clay and pulls bits up. I was reading somewhere that cornstarch could help it not stick so just wanted your ideas on this area. Maybe talc powder? I did read the article in relation to polymer clay but thought it could work on normal clay.

The cornstarch would just burn off in the bisque firing?

Thank you in advance

#2 timbo_heff

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Posted 23 April 2013 - 08:02 AM

I need some help, got a ceramics stamp that has a lot of small detail. When pressed into clay it deforms the clay and pulls bits up. I was reading somewhere that cornstarch could help it not stick so just wanted your ideas on this area. Maybe talc powder? I did read the article in relation to polymer clay but thought it could work on normal clay.

The cornstarch would just burn off in the bisque firing?

Thank you in advance


An easy trick is a plastic grocery bag: : works nice for signing leather clay with a dull pencil too!

#3 High Bridge Pottery

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Posted 23 April 2013 - 08:44 AM

Great idea, used the cling film from my lunch as a test. It worked perfectly, just got to get all the clay out the stamp now that is stuck in from my rookie mistakes

#4 AtomicAxe

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Posted 23 April 2013 - 09:57 AM

sometimes finding the right consistancy of the clay helps too, with smaller details ... softer clay sticks to those fine details, more surface area to do so. plastic will work so will some ball clay in powder form, corn starch helps as well. Sometimes really it comes down to having an excellently designed stamp that is a blend of fine details and solid design that doesn't lend itself to clay failures but that just comes with using many many stamps to know what is perfect for you.

#5 Mark C.

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Posted 23 April 2013 - 10:07 AM

I have always used talc but corn starch will do the same thing.
Mark
Mark Cortright
www.liscomhillpottery.com

#6 neilestrick

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Posted 23 April 2013 - 11:05 AM

Corn starch is my preferred method.

Neil Estrick
Kiln Repair Tech
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#7 High Bridge Pottery

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Posted 23 April 2013 - 12:31 PM

Don't have any cornstarch right now. Managing to get an OK stamp with cling film.

1.5" stamp


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#8 M. Hogsed

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Posted 23 April 2013 - 02:31 PM

A light spray of WD-40 on your stamp will keep it from sticking and gives a good clean impression. You can usually make several impessions before having to spray again. I've used it to spray all sorts of things I've pressed into clay with excellent results. I've also used cornstarch but the impression isn't as crisp.

Marcia H.

#9 celia12345678910

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Posted 23 April 2013 - 04:17 PM

I need some help, got a ceramics stamp that has a lot of small detail. When pressed into clay it deforms the clay and pulls bits up. I was reading somewhere that cornstarch could help it not stick so just wanted your ideas on this area. Maybe talc powder? I did read the article in relation to polymer clay but thought it could work on normal clay.

The cornstarch would just burn off in the bisque firing?

Thank you in advance



#10 celia12345678910

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Posted 23 April 2013 - 04:21 PM

toilet paper. if it sticks to the clays, it burns off in the bisque. Cheap too!

#11 Fourwinds

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Posted 23 April 2013 - 05:10 PM

I need some help, got a ceramics stamp that has a lot of small detail. When pressed into clay it deforms the clay and pulls bits up. I was reading somewhere that cornstarch could help it not stick so just wanted your ideas on this area. Maybe talc powder? I did read the article in relation to polymer clay but thought it could work on normal clay.

The cornstarch would just burn off in the bisque firing?

Thank you in advance

I stamp a lot, and always have used any kind of cooking oil. Whatever is on hand, olive, canola, etc. dip the stamp in whenever needed. Burns off in firing. The clay should stiffen up a tiny bit. I would not stamp a bowl I had just thrown- put outside or 5-10 minutes depending on the weather.




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