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| tylerwerrin:
the inserts are all threaded -- i just had a bear of a time casting the insert in the resin with the tube connected and removing the tube afterwards. The forums say to oil up the tube/threaded end so the resin can't harden and trap it. I think I will use a wooden dowel, and jam that on the brass insert and drill it out afterwards, or just cast with the wooden dowel in the resin and drill out the hole and tap in the plastic insert afterwards. I need to use a wooden dowel or some kind of easily drillable object to pull the cast from the mold... |
| pbj:
http://www.labcon.com/culture.html :dunno |
| tylerwerrin:
here are a couple pics lit up with my phone -- you can see that the light is diffused fairly well, but the bubbles are unsightly. 2 new tops are currently curing, here's hoping there are no bubbles. also, thanks for the link to online pipe -- they have 5/16" OD with a .09" wall -- which is perfect for threading. |
| Slippyblade:
Huh. I kinda like the bubbles. Let me know what you plan to do with it, we might work something out. |
| RandyT:
--- Quote from: tylerwerrin on February 21, 2014, 12:15:34 am ---here are a couple pics lit up with my phone -- you can see that the light is diffused fairly well, but the bubbles are unsightly. 2 new tops are currently curing, here's hoping there are no bubbles. --- End quote --- Bubbles are the result of incorporating air when mixing and pouring. You want to mix slowly and evenly, and pour the same way. To get things really bubble free, a vacuum chamber is a necessity. This will draw all of the air out of the mixture. |
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