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PRINTING ON GLASS WITH A HEATED BED
When you have a temperature controlled bed, printing directly on glass can be a great option. The recommended bed temperature for PLA is 70C.
Having your bed level and extruder at the right height is extremely important when printing on glass. If your extruder is too far from the glass your PLA will not stick AT ALL, if it is too low the glass will completely block the extrusion of material and it will not stick AT ALL.
If your first layer is not sticking
1. Make sure the bed is level.
2. Make sure the print head is close enough to make a nice squished first layer.
3. Make sure you run the extruder enough before your print starts so there is filament going onto the bed during the entire first layer. In slic3r you can turn the number of loops up to 4 or 5 or more depending on the part.
4. Clean the glass with denatured alcohol
When you can get it working well, glass is the absolute best way to print PLA. It make a great shiny bottom layer and the heated bed ensures that parts stay nice and flat.
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OTHER PRINTING SURFACES
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Note: We recommended removing the filament when soft rather than when fully melted so that there is less possibility of depositing melted material onto the extruder drive gear or leaving meterial material high up the melt chamber entrance. Both of which can cause jamming and are hard to clean out. Soft removal also helps ensure that you get everything out of the extruder tip.
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PRINTING WITH A MAKERBOT REPLICATOR
The Makerbot MakerBot Replicators extruder is not quite as powerful as some of the RepRap geared extruders so here are some extra tips that can really help get great results.
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Make sure your bed is absolutely flawlessly leveled.
Measure the filament with calipers. Take 5 measurmentsmeasurements, throw out the bottom and top values and average the remaining 3. Put this number in for the filament diameter.
Clean the extruder. If you been having problems you probably need to do this.
Clean the teeth of the drive gear.
AND THE BIGGIE! Use a tiny drop of canola oil on the end of the filament during the filament change. We got this tip from a customer and it has been AMAZING, not a single filament jam since!
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Color Recommended Temperture Temperature Recommended Range
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