User Tools

Site Tools


spacedocumentation:3d_printing_basics

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
spacedocumentation:3d_printing_basics [2017/05/15 03:08]
the_digital_dentist
spacedocumentation:3d_printing_basics [2017/05/16 21:56]
raster
Line 1: Line 1:
 +===== 3D Printing Basics =====
 +
 +
 There are a few thing that you need to know about in order to operate any 3D printer at the makerspace. There are a few thing that you need to know about in order to operate any 3D printer at the makerspace.
  
-Handling Filament:+===== Handling Filament: =====
  
 When you get a new spool of filament it comes sealed in plastic with a desiccant pack, and the free end stuck through holes in the spool's flanges.  The desiccant is there because some types of filament are especially prone to absorbing moisture from the air.  PLA and nylon are the worst, but ABS can absorb moisture, too.  At the makerspace we have a dry-box for storing PLA and nylon filaments.  If you take a spool of filament out of the dry box, be sure to tightly reclose the lid.  When you get a new spool of filament it comes sealed in plastic with a desiccant pack, and the free end stuck through holes in the spool's flanges.  The desiccant is there because some types of filament are especially prone to absorbing moisture from the air.  PLA and nylon are the worst, but ABS can absorb moisture, too.  At the makerspace we have a dry-box for storing PLA and nylon filaments.  If you take a spool of filament out of the dry box, be sure to tightly reclose the lid. 
Line 9: Line 12:
 //**Always**// keep control of the free end of the filament.  If you let it go there's a very good chance you'll end up with a tangle on the spool that will cause your print (or someone else's) to fail.  When you take filament off the machine, insert the filament's free end into one of the holes in the spool's flanges.  If the spool you take off is PLA, put it into the dry-box.   //**Always**// keep control of the free end of the filament.  If you let it go there's a very good chance you'll end up with a tangle on the spool that will cause your print (or someone else's) to fail.  When you take filament off the machine, insert the filament's free end into one of the holes in the spool's flanges.  If the spool you take off is PLA, put it into the dry-box.  
  
-Changing/Loading Filament+===== Changing/Loading Filament =====
  
 This must be done with the extruder heated to about 230-240C for most materials.  Heat up the extruder, then operate the filament release level and pull the filament straight up and out of the extruder.  **Never, ever**, cut the filament off at the entrance to the extruder!  On some printers (SoM, CubeX) doing so requires disassembly of the extruder to retrieve the stub of filament before new filament can be loaded.  Operate the release lever again and push the new filament into the extruder.  Then use either the LCD panel or host computer to extrude filament until the new filament is coming out of the extruder nozzle. This must be done with the extruder heated to about 230-240C for most materials.  Heat up the extruder, then operate the filament release level and pull the filament straight up and out of the extruder.  **Never, ever**, cut the filament off at the entrance to the extruder!  On some printers (SoM, CubeX) doing so requires disassembly of the extruder to retrieve the stub of filament before new filament can be loaded.  Operate the release lever again and push the new filament into the extruder.  Then use either the LCD panel or host computer to extrude filament until the new filament is coming out of the extruder nozzle.
  
-Print Bed Hygiene+===== Print Bed Hygiene =====
  
 The print bed is a key component in the printer.  If prints don't stick to it, they fail.  How you treat the bed is a big factor in determining your print success/fail ratio.  There are a few simple rules: The print bed is a key component in the printer.  If prints don't stick to it, they fail.  How you treat the bed is a big factor in determining your print success/fail ratio.  There are a few simple rules:
-1) Keep your grubby little hands off the bed surface!  Oil from your hands will prevent prints from sticking. +  - Keep your grubby little hands off the bed surface!  Oil from your hands will prevent prints from sticking. 
-2) Keep tools and printer parts, etc. off the bed surface.  Oil and dirt from tools will prevent prints from sticking. +  Keep tools and printer parts, etc. off the bed surface.  Oil and dirt from tools will prevent prints from sticking. 
-3) Use the proper tool to remove prints from the bed.  Allow the bed to cool down to 30-40C, then use one of the yellow handled scrapers that we provide for the purpose.  Use it with the bevel side down on the bed surface, slide the edge under the print, and pry.  If the print doesn't want to let go where you tried first, move to a different spot and try again.  Try to avoid gouging the surface of the bed and your hand- those scrapers are very sharp! +  Use the proper tool to remove prints from the bed.  Allow the bed to cool down to 30-40C, then use one of the yellow handled scrapers that we provide for the purpose.  Use it with the bevel side down on the bed surface, slide the edge under the print, and pry.  If the print doesn't want to let go where you tried first, move to a different spot and try again.  Try to avoid gouging the surface of the bed and your hand- those scrapers are very sharp! 
-4) Clean the bed at room temperature with the right solvent.  Just spill a few drops of the solvent onto the bed surface and wipe with either a  paper towel or clean rag.  If the bed has Kapton (brown) or PET tape (blue-green), use acetone.  If it has PEI (SoM) use only isopropyl alcohol. +  Clean the bed at room temperature with the right solvent.  Just spill a few drops of the solvent onto the bed surface and wipe with either a  paper towel or clean rag.  If the bed has Kapton (brown) or PET tape (blue-green), use acetone.  If it has PEI (SoM) use only isopropyl alcohol. 
-5) Don't use hairspray or glue on the beds (except for the CubePro and CubeX machines). +  Don't use hairspray or glue on the beds (except for the CubePro and CubeX machines). 
-6) Don't use any other tools on the bed.  The wire brushes are to be used for cleaning off the extruder nozzle only, NOT the bed!+  Don't use any other tools on the bed.  The wire brushes are to be used for cleaning off the extruder nozzle only, NOT the bed!
  
-Leveling and Zeroing the Bed+===== Leveling and Zeroing the Bed =====
  
 The purpose of leveling and zeroing the bed is to get the first layer of your print to stick to it.  If the first layer doesn't stick, your print fails.  Some of the printers at the makerspace need to have the bed releveled once in a while, especially if they have been out of the space at a demo. The purpose of leveling and zeroing the bed is to get the first layer of your print to stick to it.  If the first layer doesn't stick, your print fails.  Some of the printers at the makerspace need to have the bed releveled once in a while, especially if they have been out of the space at a demo.
Line 31: Line 34:
 Zeroing is done after leveling- just move the nozzle to the center of the bed and adjust the nozzle or bed height until it just catches the paper between the nozzle and bed plate.  The exact procedure will be provided in a training session. Zeroing is done after leveling- just move the nozzle to the center of the bed and adjust the nozzle or bed height until it just catches the paper between the nozzle and bed plate.  The exact procedure will be provided in a training session.
  
-Making It Print:+===== Making It Print =====
  
 SoM and the Taz printers use gcode stored on SD cards to print.  You insert the card into the card slot on the LCD panel, select the file to print, then print.  The CubePro, CubeX, Solidoodle, and Stratasys machines require a computer to drive them via USB ports.  The CubePro,  CubeX, and Solidoodle machines use Pronterface to print.  Exact procedures will be explained during a training session. SoM and the Taz printers use gcode stored on SD cards to print.  You insert the card into the card slot on the LCD panel, select the file to print, then print.  The CubePro, CubeX, Solidoodle, and Stratasys machines require a computer to drive them via USB ports.  The CubePro,  CubeX, and Solidoodle machines use Pronterface to print.  Exact procedures will be explained during a training session.
  
-Final Word:+===== Final Word =====
  
 We have a bunch of 256 MB SD cards labeled MMS in the 3D printing area.  Those cards are intended to stay at the Makerspace to be available for people to print.  Please don't take them home.  If you're printing from your own SD card and you have critical files stored on the card, put a tape tag on the edge of the card and put your name on it.  If you are going to use a printer and someone else's tagged memory card is in the slot, take it out and leave it at the machine so the named person can retrieve it.  Use your own or one of the makerspace cards for your print, not the other person's tagged SD card. We have a bunch of 256 MB SD cards labeled MMS in the 3D printing area.  Those cards are intended to stay at the Makerspace to be available for people to print.  Please don't take them home.  If you're printing from your own SD card and you have critical files stored on the card, put a tape tag on the edge of the card and put your name on it.  If you are going to use a printer and someone else's tagged memory card is in the slot, take it out and leave it at the machine so the named person can retrieve it.  Use your own or one of the makerspace cards for your print, not the other person's tagged SD card.
Line 43: Line 46:
 If you are doing a small project, you can use filament that's in the 3D printing area (in the dry-box or out).  If you're going to do something big or need some other color or type of filament, buy it and bring it to the space.  If you don't want others to use it, put your name on the spool.  If you don't care if others use your filament, don't put your name on the spool.  If you want to print something and you see a perfect shade of green filament without anyone's name on it, feel free to use it for your print. If you are doing a small project, you can use filament that's in the 3D printing area (in the dry-box or out).  If you're going to do something big or need some other color or type of filament, buy it and bring it to the space.  If you don't want others to use it, put your name on the spool.  If you don't care if others use your filament, don't put your name on the spool.  If you want to print something and you see a perfect shade of green filament without anyone's name on it, feel free to use it for your print.
  
-TLDR: if you are concerned about your stuff, put your name on it, if you aren't, don't.  If you are looking to print something and need a memory card or filament, don't use a card or filament with someone else's name on it.  Anything tagged/labeled MMS is available for your use.+**TLDR:** if you are concerned about your stuff, put your name on it, if you aren't, don't.  If you are looking to print something and need a memory card or filament, don't use a card or filament with someone else's name on it.  Anything tagged/labeled MMS is available for your use.
spacedocumentation/3d_printing_basics.txt · Last modified: 2017/05/16 21:56 by raster