Skeinforge Chamber
From DEMOZENDIUM
Some filaments contract too much and warp the extruded object. To prevent this you have to print the object in a temperature regulated chamber and/or on a temperature regulated bed. The chamber tool allows you to control the bed and chamber temperature and the holding pressure.
The chamber gcodes are also described at:
http://reprap.org/wiki/Mendel_User_Manual:_RepRapGCodes
Contents[hide] |
Operation
The default 'Activate Chamber' checkbox is on. When it is on, the functions described below will work, when it is off, the functions will not be called.
Settings
Bed Temperature

Having the temperature start off high then reduce as layers are printed helps to reduce warping and promote first layer adhesion to the build surface.
The chart was created using these settings:
Bed Temperature: 75 C
Bed Temperature End: 70 C
Bed Temperature Begin Change Height: 1 mm
Bed Temperature End Change Height : 5 mm
Example object that is 10 mm tall
Default: 60 C
Defines the heated print bed temperature in Celsius by adding an M140 command (sets bed temperature but doesn't wait until that temperature is reached before continuing).
The temperature you'll need to use could be +/- 10 C (from the recommended bed temperature for your filament material) or more depending on how and where your temperature sensor is mounted and if it's calibrated correctly. Some trial and error is needed to find the best temperature for your machine. A known calibrated temperature gauge (like an Infrared Non-Contact Temperature Gauge) is very helpful.
Bed Temperature Begin Change Height
Default: -1 mm
Defines the height of the beginning of the temperature ramp. If the Bed Temperature End Change Height is less than 0, the bed temperature will remain at the initial Bed Temperature.
Bed Temperature End Change Height
Default: -1 mm
Defines the height of the end of the temperature ramp. If the Bed Temperature End Change Height is less than 0 or less than the Bed Temperature Begin Change Height, the bed temperature will remain at the initial Bed Temperature.
Bed Temperature End
Default: 20 C
Defines the end bed temperature if there is a temperature ramp.
Chamber Temperature
Default: 30 C
Defines the chamber temperature in Celcius by adding an M141 command.
Holding Force
Default: 0 bars
Defines the holding pressure of a mechanism, like a vacuum table or electromagnet, to hold the bed surface or object, by adding an M142 command. The holding pressure is in bars. For hardware which only has on/off holding, when the holding pressure is 0, turn off holding, when the holding pressure is greater than 0, turn on holding.
Heated Beds
Bothacker
A resistor heated aluminum plate by Bothacker:
with an article at:
http://bothacker.com/2009/12/18/heated-build-platform/
Domingo
A heated copper build plate by Domingo:
http://casainho-emcrepstrap.blogspot.com/
with articles at:
http://casainho-emcrepstrap.blogspot.com/2010/01/first-time-with-pla-testing-it-also-on.html
http://casainho-emcrepstrap.blogspot.com/2010/01/call-for-helpideas-to-develop-heated.html
http://casainho-emcrepstrap.blogspot.com/2010/01/new-heated-build-platform.html
http://casainho-emcrepstrap.blogspot.com/2010/01/no-acrylic-and-instead-kapton-tape-on.html
http://casainho-emcrepstrap.blogspot.com/2010/01/problems-with-heated-build-platform-and.html
http://casainho-emcrepstrap.blogspot.com/2010/01/perfect-build-platform.html
http://casainho-emcrepstrap.blogspot.com/2009/12/almost-no-warp.html
http://casainho-emcrepstrap.blogspot.com/2009/12/heated-base-plate.html
Jmil
A heated build stage by jmil, over at:
with articles at:
http://www.hive76.org/handling-hot-build-surfaces
http://www.hive76.org/heated-build-stage-success
Kulitorum
Kulitorum has made a heated bed. It is a 5mm Alu sheet with a pattern laid out in kapton tape. The wire is a 0.6mm2 Konstantin wire and it's held in place by small pieces of kapton tape. The description and picture is at:
http://gallery.kulitorum.com/main.php?g2_itemId=283
Metalab
A heated base by the Metalab folks:
with information at:
http://reprap.soup.io/?search=heated%20base
Nophead
A resistor heated aluminum bed by Nophead:
http://hydraraptor.blogspot.com
with articles at:
http://hydraraptor.blogspot.com/2010/01/will-it-stick.html
http://hydraraptor.blogspot.com/2010/01/hot-metal-and-serendipity.html
http://hydraraptor.blogspot.com/2010/01/new-year-new-plastic.html
http://hydraraptor.blogspot.com/2010/01/hot-bed.html
PCB Heated Bed
A resistive wire heated bed etched on a PCB.
http://reprap.org/wiki/PCB_Heatbed
Prusajr
A resistive wire heated plexiglass plate by prusajr:
with articles at:
http://prusadjs.cz/2010/01/heated-reprap-print-bed-mk2/
http://prusadjs.cz/2009/11/look-ma-no-warping-heated-reprap-print-bed/
Pumpernickel2
A resistor heated aluminum plate by Pumpernickel2:
http://dev.forums.reprap.org/profile.php?14,844
with a picture at:
Zaggo
A resistor heated aluminum plate by Zaggo at Pleasant Software:
http://pleasantsoftware.com/developer/3d/
with articles at:
http://pleasantsoftware.com/developer/3d/2009/12/05/raftless/
http://pleasantsoftware.com/developer/3d/2009/11/15/living-in-times-of-warp-free-printing/
http://pleasantsoftware.com/developer/3d/2009/11/12/canned-heat/