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How to make a bonsai pot-Mold making

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How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:02 am

making bonsai pots is fun. It is easy also, just follow these easy steps...

first get some clay


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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:06 am

make a template, this was a special order for some trays for some bonsai forests . With this you can make multiples of the same potcut cut it out, customer make this sketch on a napkin lol

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:09 am

Note I cut it out a bit bigger that requested size...Why

12% shrinkage...remember that !

pat our some clay a little bigger that the template

roll roll er flat

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:12 am

put on template... cut around



bout right

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:15 am

take a little board and mark the profile



then cut it out


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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:18 am

Use that board to make the profile ...foot and angle



Cut out for the feet


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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:22 am

Now we make a dam to hole the plaster
I like Formica strips that I hot melt glue to tack it down




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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:25 am

Seal up really good




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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:27 am

Plaster de paree time



if you put a plastic bag into your bucket , clean up is easy, just let it harden then pull out the bag...walla

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:32 am

pour the plaster into the dam



continue to fill to cover by and inch or more over the top

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Next day

Post  BigDave on Sun Sep 23, 2012 7:37 am

So now I flipped over the whole thing ,

you are now looking at the top of the pot. I added a small send dam inside to hold the plaster for the top lip

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:41 am

In order for the top to come off and let the eventual pots out of the mold , you need a seperating agent between the two parts



spray that on
now you can pour the top



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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:45 am

Clean up time, surform tools works wonders



pop the top off , pull out the clay model




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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:47 am

thats it, now wait a couple weeks for the plaster to dry out. then we make clay slip

mix well


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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:50 am

Fill er up

liquid clay build up a wall on the sides of the plaster mold. in a short time you can pour out the extra

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:52 am

clean up the the top edge and put in drain holes

after a few hours the clay will release from the plaster and you can tip it out


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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:53 am

let it dry a bit, clean up the bottom...sign it


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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:55 am

look familiar...an exact duplicate of the model, now you can make multiple pots

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Re: How to make a bonsai pot-Mold making

Post  BigDave on Sun Sep 23, 2012 7:55 am

Easy right !!

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