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The CMM filled a mould up with buttons and instructed me to cast them in resin and turn pens from the results. Unfortunately I couldn't get all the air out that gets trapped within. I was going to put it in the vacuum chamber but the mould was just a tad too small so had to hop in the pressure pot but no luck. I tried turning one and buttons were zinging around the workshop. I can feel a bigger vacuum chamber coming on

The other is a design I've been working on for a while and am having problems with it clouding over. I've now cast 4 of these at different times and haven't got a single good one yet. I thought it was moisture so have had this one over the Aga for 3 days, put the sealer on and Aga for another 3 days then into a box with silica gel for a day and the humidity went down from 40% to 20% so it should be as dry as a bone. I'm not ready to give up just yet as this is for a divers charity and if I can crack it I can knock out a lot of them.

<blockquote data-quote="paulm" data-source="post: 163285" data-attributes="member: 283">The CMM filled a mould up with buttons and instructed me to cast them in resin and turn pens from the results.&nbsp; Unfortunately I couldn&#039;t get all the air out that gets trapped within.&nbsp; I was going to put it in the vacuum chamber but the mould was just a tad too small so had to hop in the pressure pot but no luck.&nbsp; I tried turning one and buttons were zinging around the workshop.&nbsp; I can feel a bigger vacuum chamber coming on <img src="http://www.penturners.co.uk/images/smilies/18/thumbs.gif"&nbsp; class="smilie" loading="lazy" alt=":thumbs:" title="Thumbs&nbsp; &nbsp; :thumbs:" data-shortname=":thumbs:" />The other is a design I&#039;ve been working on for a while and am having problems with it clouding over.&nbsp; I&#039;ve now cast 4 of these at different times and haven&#039;t got a single good one yet.&nbsp; I thought it was moisture so have had this one over the Aga for 3 days, put the sealer on and Aga for another 3 days then into a box with silica gel for a day and the humidity went down from 40% to 20% so it should be as dry as a bone.&nbsp; I&#039;m not ready to give up just yet as this is for a divers charity and if I can crack it I can knock out a lot of them.</blockquote>

[QUOTE="paulm, post: 163285, member: 283"] The CMM filled a mould up with buttons and instructed me to cast them in resin and turn pens from the results. Unfortunately I couldn't get all the air out that gets trapped within. I was going to put it in the vacuum chamber but the mould was just a tad too small so had to hop in the pressure pot but no luck. I tried turning one and buttons were zinging around the workshop. I can feel a bigger vacuum chamber coming on :thumbs: The other is a design I've been working on for a while and am having problems with it clouding over. I've now cast 4 of these at different times and haven't got a single good one yet. I thought it was moisture so have had this one over the Aga for 3 days, put the sealer on and Aga for another 3 days then into a box with silica gel for a day and the humidity went down from 40% to 20% so it should be as dry as a bone. I'm not ready to give up just yet as this is for a divers charity and if I can crack it I can knock out a lot of them. [/QUOTE]

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