Wait for bed heat up after first layer, wait for bed cool down March 08, 2016 11:54AM |
Registered: 8 years ago Posts: 7 |
Re: Wait for bed heat up after first layer, wait for bed cool down March 08, 2016 07:18PM |
Registered: 9 years ago Posts: 351 |
Re: Wait for bed heat up after first layer, wait for bed cool down March 09, 2016 11:52AM |
Registered: 8 years ago Posts: 7 |
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IMBoring25
It shouldn't be necessary to go to room temperature for first-layer adhesion. 80C is far too hot for PLA, significantly above glass transition temperature. You're trying to use the heated bed to do the job of an enclosure. Normal PLA bed temperatures are in the 45-55C range. An enclosure makes a world of difference for larger parts and you wouldn't need to mess with temperature cycling.
Slic3r just generates g-code. It doesn't have any control over how that g-code is interpreted. According to the wiki, the only stock firmware that waits for the bed to approach a setpoint from either direction is Marlin, and only if you pass M190 with an R parameter instead of an S parameter. If you're running Marlin, you can insert M190 R[some temperature higher than room temperature but low enough] before each subsequent item. With any other firmware, you'd have to edit and re-flash the firmware to change this behavior.
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M140 S75 ; wait for bed temperature to be reached
Re: Wait for bed heat up after first layer, wait for bed cool down March 09, 2016 10:46PM |
Registered: 9 years ago Posts: 351 |
Re: Wait for bed heat up after first layer, wait for bed cool down March 10, 2016 04:58PM |
Registered: 8 years ago Posts: 7 |