3D Printer - Full Spectrum Pegasus Touch

3D Printer - Full Spectrum Pegasus Touch
Name	Full Spectrum Pegasus Touch 3-D Printer
Zone	Fab Lab
Owner	i3Detroit
Make Model	Full Spectrum Pegasus Touch
Part Number	N/A
Date Acquired	2014-12
Storage Location	Next to Rostock MAX, you can't miss it.
Authorization Required	No
Status	Down
Value	$4500
Documentation	Pegasus Touch downloads
Other References	Software and manual downloads MeshMixer, an excellent tool for pre-processing Thingiverse model repository YouMagine model repository

Intro

Awesome 3D printer that uses lasers and resin to print, rather than heat and filament.

Rules

• Please donate $0.25 per milliliter or per gram of resin, whether or not the print succeeded. This covers both replacement cost of media, and maintenance costs.

Instructions

Model Prep

1. Get an STL file of your model
2. Use MeshMixer to shell the model
   1. Printing solid objects is liable to fail
   2. The only thing that sticks the part of the bed, versus the bottom of the vat, is a differential in surface area
3. Add support material as needed in MeshMixer as well
4. Export an STL of the modified file from MeshMixer

Slicing

1. Import your model into RetinaCreate
2. Use RetinaCreate directly to send the job to the printer over the network
3. The job will be transferred in full to the printer prior to printing

Printing

1. Go to the printer
2. Keep in mind that the resin is exceedingly sensitive to blue-to-UV light
3. Turn off all the lights in the Fab Lab, and close the door
4. Turn on the red light over the printer using the standard wall switch (as opposed to the strike plate/motion sensor)
5. Open the cover and remove the yellow acrylic vat cover
6. Carefully fill the vat to the middle of the three steps on the fill indicators in the rear corners
7. Close the cover and tightly close the resin bottle
8. Use the touchscreen to acknowledge that you have added resin, and to start printing
9. Once the cover is closed, you can turn the room lights back on
10. Keep an eye on the printer--it will pause for resin refill every 50mL or so of resin

Finish

1. Several hours after the job started, it will be finished
2. Keep in mind that the resin is exceedingly sensitive to blue-to-UV light
3. Turn off all the lights in the Fab Lab, and close the door
4. Turn on the red light over the printer using the standard wall switch (as opposed to the strike plate/motion sensor)
5. Put on nitrile gloves
6. Open the cover and gently remove the print from the bed with a metal scraper
7. Put the yellow acrylic plate over the vat and close the cover
8. Once the cover is closed, you can turn the room lights back on
9. Soak the print in isopropyl alcohol for around 15 minutes
10. Rinse off the part under a lot of warm water
11. Put the part in a container full of water
12. Put the container under the EPROM eraser
13. Do not look into the EPROM eraser when it is on
14. The part will probably be fully cured in a few minutes--check it regularly, and stop curing once the part is no longer tacky

Maintenance Info

Daily

• Gently scrape off resin from build plate
• Wash off vat cover if needed; dish soap and hot water work OK

Weekly

• Ensure bed is level and calibrated.

FAQ

@Liz on slack is available to answer questions on operating this machine, she has the most experience on it.

ToDo

• Mechanical mounts for beaglebone to front panel
• 1-2" vent ducting to main vent
• Edit firmware to make prints take less time
• Laser calibration to try fixing edge non-linearity
• Replace hood
• DC power switch