3D Printer Procedure

A picture of BOB, our 3D PolyPrinter!

The 3D Print Procedure of B.O.B. (Builder of Beasts)

Purchased and maintained by the Friends of the Tyler Public Library and Access Staff.

Get StartedA picture of a 3D printed DNA model

Visit the Information Desk on the 1st floor to get started.

  • Submission days:  Weekdays, Open To Close (10 a.m. to 7 p.m.) Subject to availability of trained staff.
  • Staff will review the job with you, provide an approximate cost and time, and prepare your print job. 
  • Cost is 10¢ per gram of plastic with a $2.00 processing fee paid upfront. Payment is cash only.
  • Funds collected will go back to the Friends of the Tyler Public Library as a donation.
  • Once your object is completed, we will contact you for pick up
  • Objects will be held for 14 days for pick up. 
  • Upon pick up a receipt of acceptance will be given and signed.
  • A library membership is required for print jobs.
Tech Notes
  • Maximum Print Area: approx. 23cm x 23cm x 19cm
  • Material: ABS Plastic Filament
  • Printer: PolyPrinter 229
  • Objects print in a single color
  • Our recommended websites include, and
  • Often prints will come out with extra “supports” used to stabilize the print due to the heat. This is normal. Supports are left on and cleaned by the patron.

3D Printer Rules
A pair of owl earrings 3D printed

  • The printers may only be used for lawful purposes and be for objects appropriate for a public library environment.
  • Objects must not infringe upon any third party's intellectual property rights.
  • Object must not be illegal nor can they be construed as having the intent to harm.
  • The library reserves the right to refuse any print request at the discretion of library staff.
  • The library will not save or retain submitted files after printing objects.
  • Staff will not modify or change models once submitted.
  • Staff is not liable for any damage of print job once it leaves the info desk where job was created.
  • Though we will do our best to keep the public informed, please be aware procedures are subject to change without notice. 

Some Common Questions

What colors are available?

The selection of colors is subject to availability. Patrons may choose from the colors below for their prints, but please note that the gray filament is the easiest to paint for customization. We cannot print in any color not listed. The library frequently has the following colors on hand:

  • white
  • red
  • blue (Light, dark, translucent)
  • green
  • gray (easy to paint)
  • glow-in-the-darkBust of Philosopher Voltaire, 3D printed by BOB
  • black
  • yellow
  • pink
  • silver

Check with the Info Desk periodically for any additions or changes to our options.

How long does it take?

Normally the library will be able to complete print requests in 1-2 weeks. We will add your request to our print queue and contact you as soon as the item is ready for pick up. Please be aware that this time is only an estimate, and any number of factors may extend the time of your commission. We appreciate your patience.

How large is 10 grams of plastic?

The weight of an object depends on several factors, including how hollow or solid an object is (the ”infill”), the amount of support, or the size of the object itself. Feel free to stop by the Library’s Info Desk with questions where we can give you an estimate of weight and cost. 

The Golden Snitch from Harry Potter, 3D Printed!

Copyright 2018 by City of Tyler