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For help and if you have an emergency find a lab tech in HH1.
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Call them on the phone. DO NOT attempt to repair a machine on your own. If it is outside business, hours email them with photos at facilities@doc.gold.ac.uk. Also, place a note on the broken machine so no one else uses it.
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## Step-by-step refresher:
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1. export your model as an ".stl" file from your CAD package
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2. load the ".stl" file into [Cura](https://ultimaker.com/en/products/cura-software) software
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* tune your settings
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* check your model in layer view and make sure your output is in line with your expectations (supports are where you want them to be, wall thickness and infill are appropriate, brim/raft is positioned correctly, etc.)
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* check your print time and make sure it's reasonable and in line with your 3D printing experience. Basic rule of thumb - your first print should not be longer than 30 minutes, and every following one can double the time.
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* save your print to the SD card
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* put the card in the printer
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* make sure the filament is loaded and there's enough of it on the spool
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* make sure the bed is clean and dust and fingerprint-free
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* start the print
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* watch the "initialisation poo". if it's nice and smooth - your chances are high on successful print. if it's blobby or didn't happen at all - expect trouble.
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* watch the first 3-4 layers closely and make sure they stick well to the bed.
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* if you're happy with the way things look at this point - leave a written note with your contact details and the start time of the print next to the printer and you're free to go.
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### Filament for printing
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You can get it for free from HH1. If you want to use your own material, it must be signed off on first by the lab techs.
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You can get it for free from HH1. If you want to use your own material, it must be signed off on first by the lab staff.
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### For longer jobs
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For overnight and longer than 3 hours prints - special arrangements need be made with the TechTeam
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### For longer / bigger jobs
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* For overnight and longer than 3 hours prints - special arrangements need be made with the lab staff.
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* Simultaneous use of multiple printers - only on prior arrangements with the lab staff.
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### RTFM
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