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Gowanus Monster - Margo Series

Creation's quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

The Gowanus Monster. Legend tells of a beast that haunts the darky depths of Brooklyn's Gowanus Canal. Unsuspecting hipsters who dare to approach the edges of the canal late at night are thought to have looked into the eye of the beast - then hypnotized by the strange glow of the eyes, have jumped into the canal. If they are lucky they are washed up near Whole Foods with no memory of what happened...

As part of the Margo Series - the Gowanus Monster is the Aquatic Robotic Vehicle (ARV) that searches for an ancient underwater city - rumored to be located near the Gowanus Canal. Developed by Mr. Walthersnap, the ARV uses echo location and vacuum tube technology to navigate.

Gowanus Canal:

Designed by Sean Charlesworth:

3D printing settings

Designed and modeled for Bold Machines by Sean Charlesworth

All files have been run through mesh repair and are print-ready. Most parts print wihtout support.


body bottom x1 5% / 2 shells / raft
body top x1 5% / 2 shells / raft
body-head pin x8 5% / 2 shells
eye window x2 10% / 1 shell
fin side x1 10% / 1 shell
fin top x1 10% / 1 shell
head x1 5% / 2 shell / support / raft usually not needed
porthole x6 10% / 1 shell
prop x2 0% / 1 shell / slower speed recommended
prop housing x2 10% / 1 shell
tentacle 01 - 04 x1 each 5% / 2 shells / raft & support - slower speed may help, have had some success printing without support
tentacle pin x4 10% / 2 shells / raft
platform x1 10% / 1 shell
platform arm x1 10% / 1 shell
platform front cradle x1 10% / 1 shell
platform rear cradle x1 10% / 1 shell


porthole insert x6 - used as a different color window insert for portholes 10% / 1 shell
eye window DUAL frame - used with insert for a dual print eye window 10% / 1 shell
eye window DUAL insert 10% / 1 shell


Insert pegs into body bottom
Put side fins on pegs
Put top body on pegs
Insert pegs into head (make sure to remove support material)
Put head on body assembly
Glue in: top fin and portholes
Glue on eye windows, there's no alignment key, so rotate to desired angle
Put props in housing, they will friction fit so they can rotate
Glue prop assemble to head
Gently insert pins in tentacles (make sure to remove support material) & snap into head - order does not matter
If porthole inserts are used, print in contrasting color and glue into portholes

Glue platform arm to base
Glue front and rear cradles to arm. The arm is marked with 'F' to indicate front position. Cradles are marked 'F' and 'R' for front and rear. Arrow next to letter indicates front-facing orientation for installation
Front cradle sits underneath the head

3D printer file information

  • 3D design format: STL Folder details Close
    • body-head_pin.stl
    • body_bottom.stl
    • body_top.stl
    • eye_window.stl
    • eye_window_DUAL_frame.stl
    • eye_window_DUAL_insert.stl
    • fin_side.stl
    • fin_top.stl
    • head.stl
    • platform.stl
    • platform_arm.stl
    • platform_cradle_front.stl
    • platform_cradle_rear.stl
    • porthole.stl
    • porthole_insert.stl
    • prop_housing_v2.stl
    • prop_v2.stl
    • tentacle_01.stl
    • tentacle_02.stl
    • tentacle_03.stl
    • tentacle_04.stl
    • tentacle_pin.stl

    Learn more about the formats

  • Publication date: 2018/10/12 at 10:47





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Today I printed the center fin, all the ports, eyes, manipulators, and stand parts except the bottom scale 225 I put the main body halves and fin together and made them solid to save time and filament. I put the head and tentacles together also and it will print awesome, now Im waiting on getting more filement in since it will weight in about 4 pounds total according to Simplify3d. This thing is bringing back my childhood vehicle fantasies.

I found this today and I cant wait to kick the other large print off my artillery sidewinder x1 which can print this super huge to scale 225 by combining the body halves and center fin ,and ill also pre-connect the tentacles also cause i dont need them to swirl around the assembled pieces should be around 24 inches or 62 cm when assembled. This thing is awesome. You have made me very happy indeed.

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