Frequently Asked Questions

A: Yes, our models can be fully radio controlled and have controlled forward/reverse control and steering, you can use any RC transmitter/receiver.

Q: What kind of filament do you recommend for printing?

A: We recommend PLA for most parts of the model. We have the best experience with Fillamentum PLA or Prusament PLA premium printing materials. Most parts do not matter the filament quality, but some parts may be very sensitive – for example, the gearbox gears, motor pinion, and differential gears.

  • Tested material for the gearbox gears is PLA, as it is very rigid (PET may be surprisingly fragile!). Just use some high-quality PLA – you can test it by flexing the end of the filament on your spools and you will see which one is fragile. Top option for extra durable gears is the Prusament PC Blend.
  • For motor pinion, you should use ABS or CPE, as the PLA is can melt due to the heat from the motor shaft and PET is too flexible (pinion will slip from the shaft).
  • For differential gears please use PLA, as it is rigid enough for this purpose.
  • We have the best experience with PLA for the cardan joints.

A: You will need just the following:

  • 3D printer (reqs. listed above)
  • Printing Filament (PLA or PET, 2 kg of black colour, 0.75 kg of other colour)
  • Fasteners (full list in Build Guide on page 5)
  • RC equipment (transmitter, receiver, motor and controller, steering servo, battery)
  • Set of Tires
  • Set of springs with shock absorbers

A: Virtually any FDM-based printer! We recommend to use the Prusa MK2/3 3D printers, however our kits are designed for all common "FDM" printers, which use plastic fillaments as the printing material. Minimum required print area dimensions are 200 x 200 x 180 mm. You can print on “delta” printers too, you will need cylindrical print area at least 230 x 180 mm.

A: Sure! Next to the predefined printing bed sets, you will get all individual parts in .stl format, so you can manage printing as you wish.

A: Absolutely no! Parts that need printing supports have supports made by us already. These parts/supports are verified so you don't have to worry about supports.

A: Unfortunately, some parts are too large and require a bed size of 200 x 200 mm so they cannot be printed on smaller beds.

A: For the smallest operational clearances, only minimum enlargement of the holes is set. If you are not able to calibrate your 3D printer properly, try to carefully grind the parts or use the hammer when inserting the bearing on its place. When using a hammer always keep caution!

A: To construct the model are needed any bearings having these parameters:

  • outer diameter 15 mm
  • inner diameter 10 mm
  • bearing width 4 mm.

They are commonly sold as “6700ZZ bearing” and you will need a total of 28 pieces.


A: In this specific case, we recommend buying tires because their characteristics are be significantly better than 3D printed tires and the price of the purchased tires is comparable or cheaper than the price for the flexible filament consumed to print them.

A: At first, please try to clean the print pad properly. If you use Prusa MK2/2.5/3, use the IPA (isopropylalcohol) for cleaning. If specific part still does not adhere on the pad, then use the file for the Prusa Slicer with saved parts, delete the specific part and prinit it separately with the “brim” setting activated.