glass bed not reaching temperature at the surface June 21, 2015 03:13PM |
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Re: glass bed not reaching temperature at the surface June 21, 2015 05:54PM |
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Re: glass bed not reaching temperature at the surface June 21, 2015 06:24PM |
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Re: glass bed not reaching temperature at the surface June 22, 2015 01:33PM |
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Re: glass bed not reaching temperature at the surface June 22, 2015 01:39PM |
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Quote
shadowphile
BTW, did I notice that you had a silicon-wafer bed? What choose that?
Re: glass bed not reaching temperature at the surface June 22, 2015 06:17PM |
Registered: 11 years ago Posts: 5,780 |
Quote
shadowphile
@digital_dentist:
Thanks. I occasionally see a metal bed but they are so rare I haven't given it much thought except:
..'compared to glass, metal is soft and during a nozzle crash will both scratch and catch on the plate; also when I need to scrape something off with a metal blade (which is preferred because it harder than plastic and won't melt on a hot bed'').
..'Most metal expands like crazy, which also means potential warping (of the plate) due to uneven heating and cooling, plus mounting issues, whereas borosilicate glass basically has no expansion'
..'Metal would certainly heat up faster and more evenly than glass, which would be nice'
..'I wonder what the 'sticky' conditions are for PLA and ABS?'
..'Glass does not conduct electricity, which is sometimes a blessing with respect to nearby electronics.'
Re: glass bed not reaching temperature at the surface June 22, 2015 08:28PM |
Registered: 9 years ago Posts: 280 |
Quote
the_digital_dentist
If a nozzle crash occurs with an aluminum plate, it may scratch. Scratches are not an issue- you're covering the plate with a layer of kapton tape anyway. If a crash tears the tape and scratches the bed underneath, you replace the tape and you're good to go. What aluminum won't do is shatter into tiny shards that will end up in your bearings, skin, and maybe eyes.
Aluminum tooling plate is cast and expands evenly with temperature, more evenly than extruded plate. It remains flat. The fact that it's thermally conductive means the temperature is relatively even throughout the bulk and surface of the plate.
ABS sticks to kapton tape at about 105C and PLA sticks to painter's tape applied over the kapton tape (assuming you print with ABS and PLA) at a lower temperature. You may have to adjust the Z axis zero point a little when switching from ABS to PLA printing because of the added thickness of the painter's tape.
If your wiring is such that it would be hazardous to have a metal bed plate near it, you need to fix the wiring.
Re: glass bed not reaching temperature at the surface June 22, 2015 08:34PM |
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Re: glass bed not reaching temperature at the surface June 22, 2015 09:29PM |
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Re: glass bed not reaching temperature at the surface June 23, 2015 03:24AM |
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Re: glass bed not reaching temperature at the surface June 23, 2015 08:03AM |
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Re: glass bed not reaching temperature at the surface June 23, 2015 10:00AM |
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Re: glass bed not reaching temperature at the surface June 23, 2015 08:07PM |
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