Projects
Contests
Teachers
gzumwalt
Message
Follow
Inbox
Edit Profile
View Profile
My basement in Oklahoma, US
Joined February 1st, 2017
214
Instructables
1,635,915
Views
1,213
Comments
1,594
Followers
Message
Follow
Inbox
Edit Profile
View Profile
Our grandkids keep me busy!
Greg Zumwalt
Profile
Instructables
Collections
Favorites
Discussions
Settings
Instructables
Recent
Featured
Views
Marblevator, Self Reversing Screw Lift.
25
2.9K
Piranha Plant
31
2.0K
Geneva Clock
155
12K
Penguin on Ice
54
5.2K
Marblevator, Loop 2.
49
4.5K
Marblevator, Marble Launch Mechanism.
1
953
Christmas Tree, 2023.
8
1.3K
Marblevator, Simple, Halloween
3
539
Marblevator, Less Simple, Less PLA.
34
2.9K
Marblevator, Simple.
125
10.0K
Pinwalker Penguin
7
1.2K
Penguin at the Pole.
20
2.3K
A "Do Nothing" Dominoes Box.
55
4.7K
Marblevator, Clown.
12
2.0K
Marblevator, Floating Tracks.
5
454
Marblevator, Tracks.
16
1.7K
A Playing Card Holder for Lora.
4
415
Marblevator, Line Follower.
45
6.2K
Marblevator, Emoji.
17
1.4K
Marblevator, Grippers
56
5.1K
Marblevator, Hill Climb (and Descent)!
11
1.9K
Marblevator Pick and Place, Version 4.
149
9.8K
A Case and Calculator for the Lilygo T-Display-S3 Touch Development Board.
6
2.1K
Marblevator, Paddle Lift.
106
7.9K
For My Valentine, 2023.
15
1.7K
T-Display-S3 NTP Clock
9
4.6K
A Simple 3D Printed Whitworth Quick Return Mechanism
5
1.1K
A Simple 3D Printed Scotch Yoke Mechanism.
6
1.5K
A 3D Printed Kinetic Marble Machine.
154
13K
A 3D Printed Dancing Snowman
9
1.4K
A 3D Printed Dancing Christmas Tree
7
1.3K
Marblevator, Clouds.
37
4.0K
A 3D Printed Windup Car Using a "Runaway Escapement" Speed Regulator.
83
6.0K
Marblevator, "The Ferris Wheel at the Pumpkin Patch"
48
3.4K
A 3D Printed Slinky Machine
72
5.3K
Marblevator, Golf
50
4.3K
A New Marblevator.
21
1.8K
Marblevator, Pick and Place, Version 3
82
6.0K
Marblevator, Pick and Place, Version 2.
92
7.4K
Marblevator, Perpetual?, Cradle.
69
6.7K
Marblevator, Perpetual?, Version 2.
126
10K
Marblevator, Pick and Place
198
13K
"Walk N' Roll!"
64
8.7K
Sink Stopper
473
Wacky Walker
104
8.0K
Crayon Car Mechanism.
135
13K
Butterfly Automaton
84
6.3K
Marblevator, Caterpillars
76
6.9K
Marblevator, Perpetual?
132
11K
MicroWave
56
4.5K
Marblevator, Wave
156
32K
Valentine Heart Pinwalker.
28
4.9K
A 3D Printed GT2 Profile TPU Belt With PLA Sprockets.
17
4.4K
Marblevator, Circus
112
10K
Rack and Pinion, 3 to 1 Stroke.
95
10K
Marblevator, Halloween.
11
1.7K
Marblevator, Christmas Tree.
35
4.7K
Marblevator, Wheel and Spirals
5
826
Marblevator, Spiral Disk.
36
2.6K
Marblevator, Spirals.
9
1.2K
Marblevator, Wheels, Vertical
50
4.5K
Marblevator, Wheels
15
1.4K
A 3D Printed Seven Segment Electro-Mechanical Single Motor Driven Display.
121
7.8K
A 3D Printed Balloon Powered "Jet" Car With Inflator.
43
3.7K
3D Printed Rope Puzzler
19
2.2K
Darth 3.0: a 3D Printed Animated Darth Vader Helmet.
70
10K
A 3D Printed Simple Mechanical Frog 2.0.
8
1.7K
A 3D Printed Simple Mechanical Frog.
1
1.3K
A (mostly) 3D Printed Air Pump.
15
5.6K
Darth 2: a 3D Printed Animated Darth Vader Helmet.
165
36K
A 3D Printed Animated Valentine Heart for My Valentine!
208
16K
A 3D Printed Snake Automaton.
112
11K
3D Printed "Pegs and Jokers" Game.
12
3.0K
3D Printed Christmas Billboard.
60
15K
A 100% 3D Printed Linear Snap Action Mechanism.
114
21K
A 3D Printed Animated Angel Christmas Tree Topper.
16
4.2K
Last Date.
7
3.6K
Cycloidal Disk Electro Mechanical Timer.
40
5.9K
Designing a 3D Printable Hexagonal "Twisty Vase" Using FreeCAD.
1
2.0K
FreeCAD Design of the Base of My "Refrigerator Rover" Model.
4
1.5K
Refrigerator Rover
30
3.6K
Designing a Simple 3D Printed Rubber Band Car Using FreeCAD
10
2.7K
A Simple 3D Printed "Walking" Mechanism.
109
10K
"Bolt Box", a Simple to Print But Hard to Solve 3D Puzzle
29
4.0K
A Trio of "Keychain Puzzles".
60
4.5K
"Rarity", a 3D Printed Automaton
74
5.7K
Levitation, a 3D Printed Automaton Illusion.
56
8.9K
"Lora and I", a Simple 3D Printed Automaton.
10
3.2K
Life Is a (Boundless Supply Of) Cabernet!
19
2.9K
3D Printed Magnetic Tensegrity Model
24
3.1K
3D Printed "Tensegrity" Model
17
3.6K
The "Calamari Kid".
127
13K
Mac N' Cheese
102
10.0K
The "Magic Chef", a 3D Printed Automata.
75
9.1K
Geared Heart Version 2.0
60
7.4K
How I Designed a 3D Printable Valentine Heart Gift Box Using Autodesk Fusion 360
1.9K
"Batman" Themed Picture Frame
1
1.3K
"No Fall" Toy Mechanism
125
11K
Robotic Nutcracker Pin Walker
37
13K
Robotic Cam Steered Vehicle
51
5.0K
Robotic Christmas Teapot Multi-Color With Single Extrusion
645
Robotic Christmas Teapot
11
3.4K
Hopper.
67
7.6K
Carousel II
10
3.1K
The "Nuts and Bolts" of How I Design, 3D Print and Prepare Nuts and Bolts.
14
5.6K
Snowman Pin Walker
10
2.7K
Motorized, Articulated T Rex(ish) Pin Walker
209
18K
Autodesk Fusion 360 Parametric Table
36
10K
Happy Halloween "Somewhat Stretchy" Bracelet.
943
Marblevator, Magnetic Tracks
89
6.6K
Halloween Happy Ghost Pin Walker.
22
3.0K
Ultimaker Robot "Pin Walker".
22
3.6K
RIP Skeleton
51
10K
Walking Pumpkin II
27
5.4K
Fab Lab Tulsa Trophy and Dancing Robots
32
5.0K
Pink and Green Domino Machine II
234
28K
Six Medals.
1
1.3K
Designing a Cosplay Dagger Using Autodesk Fusion 360.
1
1.9K
Hummingbirds.
94
16K
3D Printed Bowl
2
2.3K
Simple Ball Bearing Car
43
5.6K
3D Printing Maker Design Lab's Silhouette Vase.
17
2.4K
Three Candles
2
1.4K
Inductive Candle
83
19K
How I Designed a Simple Threaded Container With Autodesk Fusion 360.
10
4.9K
3D Printed Print in Place Plate Holder
7
5.3K
DuckBunny
10
2.1K
Perpetual Motion Da Vinci Style IV
36
4.1K
Perpetual Motion Da Vinci Style III
84
10K
Perpetual Motion Davinci Style II
165
20K
ESP32 NTP Temperature Probe Cooking Thermometer With Steinhart-Hart Correction and Temperature Alarm.
54
13K
ESP32 Capacitive Touch Input Using "Metallic Hole Plugs" for Buttons
53
14K
How I Designed a 3D Printed Windup Car Using Autodesk Fusion 360.
110
17K
Designing a Simple 3D Printed Rubber Band Car Using Autodesk Fusion 360
114
19K
Windup Bunny 2 With a PLA Spring Motor and Floating Pinion Drive
40
4.5K
Floating Pinion Demonstrator 2
17
3.8K
PLA Spring Motor Demonstrator 2
73
12K
Geared Heart Message Pendant
24
3.1K
Parametric Print in Place Hinge
27
11K
Valentine Heart Pendant
705
Designing a Parametric Parametric "Print in Place" Hinged Container
303
24K
Darth
70
23K
Ping Pong Popper
90
9.8K
Digital Auto Correcting Clock With Chimes and Daylight Savings Time
14
2.4K
3D Printed Mantel Style Auto Correcting Clock With Chimes and Daylight Savings Time
42
6.5K
3D Printed Snowman Tea Light
3
885
Stepper Motor Test Fixture
16
9.2K
'Antique' Auto Correcting Analog Clock
45
6.6K
Bell Ornament With Stand
13
1.4K
Simple Secret Box V: Gift Box Edition
33
4.4K
Animated & Illuminated Happy Ghost
41
4.9K
Tea Light Ghost Lamp
3
1.1K
Simple Secret Box IV: Jack O'Lantern Coin Box
15
2.4K
Red Baron II: Hand Launched Biplane Glider
54
5.3K
Simple Secret Box II: Coin Bank
42
7.3K
Red Baron Hand Launched Glider
48
5.8K
Complaint Button II: Hammer Time
65
6.8K
WiFi Propeller Boat II
67
5.9K
3D Printed Replacement Lamp Knob
1
2.3K
WiFi Propeller Boat
66
6.4K
Ping Pong Trophy
1
2.1K
WiFi Paddle Boat.
200
23K
Fab Lab Tulsa 1 (FLT1)
89
7.8K
Fab Lab Tulsa Paddle Boat
2
1.3K
Apple Coin Bank
31
4.3K
Marblevator Mini, Loop.
176
14K
Marblevator, Mechanisms.
26
5.4K
Complaint Button.
91
11K
Horse, Prototype
158
19K
Hummingbird 25mm Motor Adapter
5
1.9K
Hummingbird
358
53K
Best Dressed Leprechaun Trophy
1.3K
XOXO
771
WiFi Kit 32 NTP Clock
44
26K
Heltech WiFi Kit 32 Based Network Scanner
27
16K
Money Maker!
132
24K
Santa Sleigh, Wifi Edition
3
2.2K
Motorized WiFi Controlled Chassis
50
5.4K
Model Aircraft Styled Air Engine, Experimental
33
7.5K
Lady Buggy, WiFi Edition
75
7.0K
3D Printed "Wobbler" Style Air Engine
34
6.0K
Intelligrill®, Powered by Feather.
94
9.5K
Scissor Jack O'Lantern
26
2.0K
Pseudo Secret Ring Box
25
3.2K
Single Cylinder Air Engine, Experimental
105
10K
Four Cylinder Air Engine, Experimental
162
19K
Flying Pumpkin (Balloon)
46
7.4K
Ballerina in Petals
21
4.2K
Butterfly, Animated.
99
9.0K
Lora's Giraffe
3
1.2K
Bantam Biplane
9
898
Marblevator Air
136
10K
Pterodactyl, Pseudo Style
77
5.2K
Perseverance Petite, Motorized
25
3.2K
Perseverance, Petite
90
7.9K
SS OhNo
14
2.9K
Two Balancing Bats
9
1.6K
From the Earth to the Moon
9
3.0K
Saber 2
84
9.9K
The Design of "Cylinder Notes MHALL.stl".
37
2.8K
Two Air Pumps
60
7.8K
Four Whistles Version 2
228
19K
Balloon Powered Single Cylinder Air Engine Open Chassis
106
10K
Four Whistles
36
4.6K
Balloon Powered Single Cylinder Air Engine Toy Train
104
12K
Single Cylinder Air Engine Balloon Powered Rolling Chassis
262
54K
Dual Mode Windup Car
190
19K
Pencil Puzzler Revisited
119
32K
Single Cylinder Air Engine Smaller Edition
41
7.3K
Marblevator Baby Steps Revisited
37
4.4K
Tabletop Pull Back Tri-Mode Spring Motor Rolling Chassis
187
17K
Single Cylinder Air Engine
274
30K
Twin Tops
18
2.3K
A Message From the Heart
17
1.5K