Bulb Lubricant

Joined: 9:30 AM - Aug 27, 2014

8:24 AM - Dec 31, 2014 #1

I am about to pour the plaster of paris around the balsa bulb. The book says use lubricant so both surfaces separate easily. What lubricant is used and how is it spread. ?
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Joined: 11:48 AM - Oct 28, 2012

9:35 AM - Dec 31, 2014 #2

Try Vaseline. Worked for me. (Oops, that sounded a bit bad but never mind!)
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