Jump to content

What’s a good mold wall thickness?


Recommended Posts

My molds are round shaped, with a wall thickness of about 3-4 cm.

it’s ok for smaller molds, but for large ones they’re quite heavy.

i’ve noticed after slip casting that water builds a round layer of about 1-1.5cm

 

what’s a recommended wall thickness for slip casting molds?

Link to post
Share on other sites
Just now, Chilly said:

I think most books I've read on the subject say 2 inches.

Yes, as they get bigger they get heavier.  Also as they get bigger, the water to plaster ratio increases, so the moulds need to be even thicker.

hmm that's interesting, I would expect the wall thickness to depend on the desired ceramic wall thickness, no matter the size of the mold

Link to post
Share on other sites

The bigger the form the thicker the walls need to be to absorb the water.so what size  of the form are we talking about???

I used to slip thousands of 5 inch tall aroma therapy lamps the molds where about1.5 inches  to 2 thick in all directions.

Link to post
Share on other sites
2 hours ago, Mark C. said:

The bigger the form the thicker the walls need to be to absorb the water.so what size  of the form are we talking about???

I used to slip thousands of 5 inch tall aroma therapy lamps the molds where about1.5 inches  to 2 thick in all directions.

Forms are about 18 cm x 14 cm. And the walls need to be 1cm width

Link to post
Share on other sites

I've never cast anything that thick.  My head says, the thicker the cast, the thicker the mould need to be, in order to absorb even more water from the slip.  But, my head also says, will the water travel through that much "drying" slip?

Link to post
Share on other sites
  • 4 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

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