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Bowl molding

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This topic contains 15 replies, has 6 voices, and was last updated by  Pim van Baarsen 3 years ago.

1
Pim van Baarsen pimvb

Bowl molding

19/01/2016 at 14:46

Found two identical enameled bowls at the thrift store to experiment with as a mold.
Seems like a useful material the plastic doesn’t stick to…

To be able to squeeze the plastic pallets together after heating, I attached screw-thread.
It’s in the oven right now. I expect it needs about 90 min at 200 degrees Celsius.

I will keep you guys posted!

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In reply to: Bowl molding

helper
19/01/2016 at 17:45
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Bowl in the oven!
#Exciting

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In reply to: Bowl molding

helper
20/01/2016 at 17:33
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Not bad for a very first sample 🙂

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In reply to: Bowl molding

helper
21/01/2016 at 20:37
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Good busy Pim!!!

Waiting for the pictures of your today’s experiments…..

In reply to: Bowl molding

helper
25/01/2016 at 11:42
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After testing some different oven settings and plastic volumes, I’m pretty proud with the result!

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In reply to: Bowl molding

helper
24/02/2016 at 19:42
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Found a faster and easier way to press the two bowls together.
Four clamps will do the job. It saves a lot of tightening nuts and the result is nice 😉

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In reply to: Bowl molding

helper
24/02/2016 at 20:07
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The bowl-molding technique does not always works perfectly.
Guess this one was in the oven too long…

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In reply to: Bowl molding

helper
24/02/2016 at 20:30
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Simply saw away the crusty edges with the belt saw and sandpaper it.
You can peel of the rough edge that will remain, with your nail.

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In reply to: Bowl molding

new
17/04/2016 at 22:05
1

These are awesome. As a millennial, its tough saving money and this is a cheap way to make household materials. The main thing I am interested in is if the plastics used for dishes and possibly for utensils is dishwasher safe. This is something that just saves time in busy lives and is definitely a luxury, however would be nice to know what types of plastic and the success that you have had with them in this scenario. I currently do not have the ability to start but would like to keep up on this research.

In reply to: Bowl molding

new
03/05/2016 at 23:37
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Are the last two just steel bowls?

In reply to: Bowl molding

helper
04/05/2016 at 18:06
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@pimvb
Like all your stuff you post.
Thanks for sharing!

In reply to: Bowl molding

new
23/06/2016 at 07:47
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Hi Dave, these are some awesome work. When I tried I had an issue of plastic sticking to the mould. Did you face the same and how did you bypass that issue??

In reply to: Bowl molding

helper
16/11/2016 at 21:33
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@sdeananderson

I believe I used Polypropylene for the bowls but don’t know if this material is dishwasher save. Only one way to find out. Building the machine and make them 😉

In reply to: Bowl molding

helper
16/11/2016 at 21:39
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@hiroshan

I had the same. Sometimes it was really impossible to remove the plastic from the mold… It literally cost me some molds 🙁
Didn’t find the reason for that. Think it has to do with the time in the oven and temperature. It also depends on which materials. It seems that some are more sticky than others.

There are sprays on the market to spray your mold and prevent it from sticking to the plastic. It sounds really chemical to me and tried it one without result. But maybe I had the wrong one or didn’t use it the right way.

In reply to: Bowl molding

helper
16/11/2016 at 21:40
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@paulfreed

Thanks a lot!
Appreciate that 😀

In reply to: Bowl molding

helper
16/11/2016 at 21:41
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@fxblf

I only used steel bowls as mold.
The first pictures are enameled bowls.

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