3D-printers

The Bastli has two Prusa i3 MK3s 3D printers. We are also proud owners of a self-built Voron!

Our Prusas

Data:

• 1.75mm ⌀ filament
• Print volume of 250x210x210mm
• 0.4mm ⌀ nozzle

Prices

0.05 CHF/g

Free if you bring your own filament. Price shown here might not be up to date, you may inquire the actual price before starting to print in the shop.

Printer guidelines

• Printing requires some minimal knowledge/experience. We kindly ask you to be introduced by one of our teammebers if you do not for sure how to use them
• Clean the nozzle well (remove residue with a brass brush and/or tweezers if preheated), clean the bearing and grease it with bearing grease, clean regularly
• Check the filament for knots
• Pure & clear filament (e.g. transparent) is more reliable to print
• Use the onboard menu to change the roll (if not specified in the G-code), store the roll in a plastic bag with silica gel (moisture makes filament brittle)
• PrusaSlicer is recommended, but Cura works too
• If anything weird happens during printing, abort the print! Inform a Bastli-member to get assistance
• In case damages occurs due to negligence you’ll fix the printer in the very near forseeable future…

SLA printer Formlabs Form 1

This 3D printer in Bastli prints with liquid resin and can print very precise details with layer thicknesses of 25 to 100 µm. We generally do not use the printer inside the laboratory and use must be agreed upon, as cleaning is a bit more intensive and you should plan about an afternoon for everything.

Bastli 3D printing offer

Please note that printing parts can take some time and therefore only a limited number of people can print per day. So register in advance (come by and print). First come, first served.

3D printing is intended for leisure projects and not for bachelor’s, master’s or doctoral theses or other ETH projects. The respective institutes have their own printers.

For very delicate parts, commercial orders or if your institute really doesn’t have a printer, we recommend 3D printing service providers such as Shapeways, i.materialise or PrintaBit (Bastli has neither experience nor affiliations with these companies).

Courses

Manchmal offerieren wir Kurse, siehe Events.

Printing process (with PrusaSlicer)

1. Import the file in stl format (drag & drop) and place it on the build plate. Insert the 3D printer’s SD card.
2. Adjust the filament type, layer thickness & quality, brim, infill and supports (layer thickness thinner than 0.2 mm is usually only for small objects; infill is gyroid by default, supports are off by default).
3. Activate “Slice now” at the bottom right
4. If necessary, repeat steps 2 and 3 and adjust. If not, activate “Export g-Code” at the bottom right and
5. Save the g-code file to the SD with at least the user’s name (identification of the last print)
6. Eject the SD card via the right-click menu. Simply pulling out the SD card almost always leads to the printer complaining and the SD card hates you :(
7. Insert the SD card into the printer Plug in, select the desired filament and load it (loading process is described separately depending on the printer)
8. Select the file on the SD card, the printer does the rest.
9. Observe the first layer to see if the filament comes loose or if any other problems occur.

Voron Printer

The Voron is superior to the Prusas, but also more delicate and is thus only acessible at request.