projects:glass_sphere:work_logs:work_log_5
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projects:glass_sphere:work_logs:work_log_5 [2019/01/27 06:17] – tjhowse | projects:glass_sphere:work_logs:work_log_5 [2019/01/28 00:59] – tjhowse | ||
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I crushed them up into chunks no larger than about 40mm in any dimension. I then washed and sieved the glass to remove dirt, dust, and very fine glass powder. | I crushed them up into chunks no larger than about 40mm in any dimension. I then washed and sieved the glass to remove dirt, dust, and very fine glass powder. | ||
- | I dried the wet crushed glass in a stainless steel pot on a hotplate. I weighed out six equal quantities of glass into a muffin pan and melted it in my furnace. | + | I dried the wet crushed glass in a pot on a hotplate. I weighed out six 145g quantities of glass into a muffin pan and melted it in my furnace. |
- | === Video === | + | {{: |
+ | Meets: | ||
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+ | After I started that profile running I realised I'd forgotten to paint the muffin tin in release agent. This could be bad. | ||
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+ | Results: | ||
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+ | {{: | ||
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+ | Looks promising... | ||
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+ | But no. | ||
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+ | {{: | ||
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+ | I suspect the coating on the muffin tin decomposed at high temperatures and bubbled gas through my slugs. I threw one on the linisher to see whether it would be workable for testing polishing techniques, but the bubbles are very close to the surface and I broke through almost immediately. This results in glass fragments getting caught between the polishing surfaces and gouging around. | ||
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+ | Next time I will try to buy an uncoated stainless steel muffin tin, or I will pre-fire the tin on a dry run to burn off any coatings, then add a layer of release agent. | ||
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+ | === Video === | ||
+ | To follow. | ||
====== What I want to accomplish next time ====== | ====== What I want to accomplish next time ====== | ||
- | * | + | * Pre-fire the muffin tin to avoid bubbling. |
projects/glass_sphere/work_logs/work_log_5.txt · Last modified: 2022/01/23 00:24 by tjhowse