3x scale Curta Type I for FDM 3D printing
Please see the BOM for information about how to print the parts, what non-printed parts to gather, and suggestions on how to source them.
The build manual should provide a rough idea how to assemble the calculator.
The assembly video should also help.
For additional questions and help, please join us on Discord
The calculator itself was originally designed by Curt Herzstark and produced by Contina AG Mauren.
mcmaven's Curta Calculator Mods heavily inspired my changes to the carry levers. I highly recommend checking out his other changes too.
| 10218.stl | 455.7KB | |
| 10219_-_410002.stl | 336.0KB | |
| 10220_-_410003_x15.stl | 355.1KB | |
| 10221.stl | 235.3KB | |
| 10222.stl | 235.3KB | |
| 10230_-_410008_x15.stl | 216.3KB | |
| anti-reversal_m5_bolt_sleeve.stl | 621.0KB | |
| base_plate.stl | 140.9KB | |
| bearing_plate.stl | 2.4MB | |
| carriage_body.stl | 1.6MB | |
| carriage_body_pin_x2.stl | 56.3KB | |
| carriage_body_stop_pin.stl | 197.0KB | |
| carriage_pin.stl | 28.2KB | |
| carriage_spring_sleeve.stl | 112.6KB | |
| CarryLeverSpringTool.pdf | 115.0KB | |
| carry_lever_spring_tool.step | 40.9KB | |
| carry_lever_spring_tool.stl | 108.4KB | |
| carry_lever_spring_tool_new.stl | 651.2KB | |
| clearing_cap_teeth_x2.stl | 215.3KB | |
| clearing_cap_tooth_segment_spacer.stl | 684.0B | |
| clearing_cover.stl | 422.0KB | |
| clearing_ring.stl | 2.4MB | |
| clearing_ring_rivet_x2.stl | 295.4KB | |
| clearing_stop_pin.stl | 562.6KB | |
| clearing_stop_pin_sleeve.stl | 84.5KB | |
| cover_ring.stl | 387.2KB | |
| crank_collar.stl | 3.6MB | |
| crank_collar_nut.stl | 1.1MB | |
| crank_collar_washer.stl | 70.4KB | |
| crank_handle.stl | 915.3KB | |
| crank_handle_pin.stl | 1.6MB | |
| crank_handle_pin_screw.stl | 185.3KB | |
| Curta_Assembly.step | 24.3MB | |
| Curta_Finishing_guide.pdf | 582.6KB | |
| digits_axle_x17.stl | 87.9KB | |
| digits_cover.stl | 3.5MB | |
| digit_selector_screw_x8.stl | 605.5KB | |
| disc_roller_bolt_sleeve.stl | 85.6KB | |
| frame_support_x3.stl | 197.0KB | |
| Input_Digits-new.svg | 39.6KB | |
| lower_housing.stl | 1.3MB | |
| lower_housing.svg | 18.4KB | |
| lower_reversing_lever_spacer.stl | 56.3KB | |
| main_axle_and_step_drum_bottom.stl | 2.9MB | |
| main_axle_and_step_drum_top.stl | 1.8MB | |
| main_body.stl | 2.4MB | |
| main_crank.stl | 1.4MB | |
| number_roll_carry_pin_full_x7.stl | 28.2KB | |
| number_roll_carry_pin_half_x8.stl | 31.4KB | |
| position_marker_x10.stl | 562.6KB | |
| results_dial.svg | 52.9KB | |
| results_dial_10043_x4.stl | 378.6KB | |
| results_dial_10045_x13.stl | 283.3KB | |
| retaining_ring_for_tens_bell.stl | 56.3KB | |
| reverse_nose_plate.stl | 43.2KB | |
| reverse_rotation_prevention_pawl.stl | 120.6KB | |
| reversing_lever_arrows.svg | 3.0KB | |
| reversing_lever_knob.stl | 527.1KB | |
| reversing_shaft.stl | 162.9KB | |
| selector_knob_x8.stl | 186.0KB | |
| selector_shaft_bearing_x8.stl | 112.6KB | |
| selector_shaft_bottom_x8.stl | 1.3MB | |
| selector_shaft_top_x8.stl | 141.4KB | |
| setting_axle_holding_plate_x2.stl | 66.3KB | |
| spider_spring.stl | 464.2KB | |
| spring_sleeve_c-clip.stl | 109.8KB | |
| step_drum_joining_pin_x3.stl | 56.3KB | |
| tens_bell.stl | 1.0MB | |
| tens_bell_c-clip.stl | 109.5KB | |
| tens_bell_spring.stl | 2.2MB | |
| tens_slider_for_results_x10.stl | 123.5KB | |
| tens_slider_for_turns_counter_x5.stl | 125.7KB | |
| tens_slide_bearing_x15.stl | 7.3KB | |
| thrust_ring.stl | 56.3KB | |
| transmission_gear_tip_x17.stl | 200.6KB | |
| transmission_shaft_10207_x12.stl | 77.8KB | |
| transmission_shaft_10208.stl | 172.7KB | |
| transmission_shaft_10209_x3.stl | 172.7KB | |
| transmission_shaft_10216.stl | 125.3KB | |
| upper_housing.stl | 1.8MB | |
| upper_housing_numbers.svg | 23.7KB | |
| upper_outer_sleeve.stl | 329.2KB | |
| upper_outer_sleeve.svg | 7.5KB | |
| upper_reversing_lever_spacer.stl | 56.3KB | |
| zero_positioning_disc.stl | 235.4KB | |
| zero_positioning_disc_pin.stl | 56.3KB | |
| zero_positioning_disc_roller.stl | 56.3KB | |
| zero_positioning_disc_securing_spring.stl | 1.4MB | |
| zero_positioning_lever.stl | 227.5KB | |
| zero_positioning_m5_bolt_sleeve.stl | 114.7KB |
