|
Next revision
|
Previous revision
Last revision
Both sides next revision
|
equipment:som_3d_printer [2017/04/09 01:27]
tony3 Moved from spacedocumentation/3d_printing to here |
equipment:som_3d_printer [2017/04/09 13:13]
the_digital_dentist |
| When you get a new filament spool, unwrap it, and weigh it. Mark the empty spool weight on the spool (if you bought a 1 kg spool, and the whole thing weighs 1340 g, it's a safe bet that the empty spool weighs 340 g). | When you get a new filament spool, unwrap it, and weigh it. Mark the empty spool weight on the spool (if you bought a 1 kg spool, and the whole thing weighs 1340 g, it's a safe bet that the empty spool weighs 340 g). |
| |
| When you're going to run a multihour print and not absolutely certain that there's enough filament on the spool, weigh it and subtract the empty spool weight. That tells you how much filament is on the spool. Then you can compare the weight of the filament on the spool to the slicer's estimate of filament required. Cura, Simplify3D, and maybe others, provide estimates of required filament. | When you're going to run a multihour print and not absolutely certain that there's enough filament on the spool, weigh it and subtract the empty spool weight. That tells you how much filament is on the spool. Then you can compare the weight of the filament on the spool to the slicer's estimate of filament required. Cura, Simplify3D, and maybe others, provide estimates of required filament. Slic3r estimates volume of filament used and puts it in the gcode file, near the end. Multiply that number by the density (1.25 g/cm^3 for PLA and 1.05 g/cm^3 for ABS) of the filament to calculate the mass of filament required for the print. |
| |
| Measure and calculate average filament diameter. Filament rarely averages out to the nominal 1.75 mm diameter. 0.03 mm diameter error makes a visible difference in print surface quality. I typically measure in 20-30 places and calculate the average from the measurements. Mark the diameter on the spool for future reference. Use that filament diameter when you slice. | Measure and calculate average filament diameter. Filament rarely averages out to the nominal 1.75 mm diameter. 0.03 mm diameter error makes a visible difference in print surface quality. I typically measure in 20-30 places and calculate the average from the measurements. Mark the diameter on the spool for future reference. Use that filament diameter when you slice. |
| |
| Keep your grubby hands off the bed surface! Oil from your hands will prevent prints from sticking. Don't set tools or anything else on the bed. The only things that should ever touch the PEI surface should be a rag with acetone, molten plastic, and the scraper blade that is used to remove the prints. | Clean the PEI surface at room temperature with pure IPA (isopropyl alcohol, //**not**// India Pale Ale) only, //**ABSOLUTELY NEVER**// finger nail polish remover! Finger nail polish remover contains greasy stuff like glycerin to prevent drying your skin, and that greasy stuff will prevent prints from sticking to the bed. |
| |
| Clean the PEI surface at room temperature with pure acetone only, //**ABSOLUTELY NEVER**// finger nail polish remover! Finger nail polish remover contains greasy stuff to prevent drying your skin, and that greasy stuff will prevent prints from sticking to the bed. | Keep your grubby hands off the bed surface! Oil from your hands will prevent prints from sticking. Don't set tools or anything else on the bed. The only things that should ever touch the PEI surface should be a rag or paper towel with IPA, molten plastic, and the scraper blade that is used to remove the prints. |
| |
| Remove prints using the yellow handled scraper that is in the drawer. If your print is stubborn, try prying it up at a different spot. Avoid gouging the PEI surface! It is usually easiest to remove prints when the bed is at room temperature, but if your first layer doesn't stick, just scrape it off the bed while it is still hot, make adjustments, and start the print again. | Remove prints using the yellow handled scraper that is in the drawer. If your print is stubborn, try prying it up at a different spot. Avoid gouging the PEI surface! It is usually easiest to remove prints when the bed is at room temperature, but if your first layer doesn't stick, just scrape it off the bed while it is still hot, make adjustments, and start the print again. |
