Silly Rabbit
Member
So I was doing some testing with my new pressure pot this weekend. I was using a mixture of 70/30 pr and acetone (read about it on this forum, but for the life of me can't find the thread and I have searched and searched just to verify the ratio). I was using this mixture because I remember reading it somewhere about stabilizing, it might have been for something else but it was a quick glance through the thread- read it and moved on type of thing. So who actually knows what it was about. Worth a try anyways. Whoever it was please comment as I am tired of searching.
I was using it to try to stabilize a few pine cones that I wanted to turn. I put the pine cones in seperate HDPE pipes with caps on the end and filled the pipe above the end of the cones. The extra I put into a PVC pipe, set all three pipes in my pressure pot and attached the compressor and off we went.
well, a few days later I have a solid blank in the PVC pipe and the resin in the two pine cones is still liquid. Additionally, the HDPE is now very soft up to the level of resin in the pipe.
Most of you probably already know this, but I failed to read my HDPE and LDPE resistance chart. HDPE doesn't like a vacuum or high temperature, surely doesn't like acetone.
From my chart info...
Just thought I would share.....
I was using it to try to stabilize a few pine cones that I wanted to turn. I put the pine cones in seperate HDPE pipes with caps on the end and filled the pipe above the end of the cones. The extra I put into a PVC pipe, set all three pipes in my pressure pot and attached the compressor and off we went.
well, a few days later I have a solid blank in the PVC pipe and the resin in the two pine cones is still liquid. Additionally, the HDPE is now very soft up to the level of resin in the pipe.
Most of you probably already know this, but I failed to read my HDPE and LDPE resistance chart. HDPE doesn't like a vacuum or high temperature, surely doesn't like acetone.
From my chart info...
High Density Polyethylene: HDPE is the most widely used resin for plastic bottles. This material is economical, impact resistant, and provides a good moisture barrier. HDPE is compatible with a wide range of products including acids and caustics, is supplied in FDA approved food grade, but is not compatible with solvents. While HDPE is naturally translucent and flexible, the addition of color will make HDPE opaque, although not glossy and it lends itself readily to silk screen decoration. While HDPE provides good protection at below freezing temperatures, it cannot be used with products filled at over 160 °F (71.1 °C) or products requiring a hermetic (vacuum) seal.
Oh well, it was a fun experiment. I will probably just take the cones out of the pvc and let them cure with some heat. I do like my new CA Technologies pressure pot though, a few minor tweaks with some valves and such and it is airtight, or will be. And safe.
Just thought I would share.....