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GMTRCPLY - GeoMeTRiCPLaY - Magnetic Sticks

 Introduction   ·   Stick Sets   ·   Steel Balls   ·   Instagram Posts 

Magnetic Sticks
Different Magnetic Sticks 

Introduction

The classic Magnetic Stick sets come with plastic coated magnetic sticks, and ferromagnetic spheres.

Usually, the ends of each stick have opposite magnetic polarity. But there are also sets where the ends have the same magnetic polarity, and therefore contain two types of sticks.

Current "regular" sets come with short (~27mm) or long (~58-60mm) sticks. The balls have 12.0-12.8mm diameter.

The photo shows different Magnetic Sticks, from left to right...

Magnetic Stick Sets

The table below shows the characteristics for some sets.
Brand Type Stick
Length
Diameter Weight Magnetic Strngth Ball
Diameter
Weight Notes
Generic Short 27.1mm 6.7mm 3.9g medium 12.0mm 7.2g
Generic Long 58.0mm 7.0mm 6.8g medium 12.0mm 7.2g
BANBBY Long 58.0mm 7.0mm 6.7g medium 12.0mm 7.2g
Goobi Long 59.9mm 9.9mm 4.1g high 12.8mm 8.5g
Geomag Long 58.2mm 7.6mm 9.7g high 12.8mm 8.5g
Geomag PRO-L 58.2mm 7.4mm 9.8g high 12.8mm 8.5g
Geomag Original 27.0mm 7.4mm 4.6g high 12.7mm 8.4g Out of production
Wisemag Short 30.9mm 6.4mm 5.7g very high 12.7mm tbd Out of production
Magnetic World Medium 39.6mm 8.9mm 1.4g very low 12.0mm 6.9g Junk, for reference purposes

Steel Balls

You can combine any ferromagnetic sphere with the magnetic sticks. Below are some examples for 100Cr6 (1.3505) industrial grade steel balls that I have available.

Diameter Volume Weight Density
9.00mm0.38cm³2.98g7.80
9.53mm0.45cm³3.54g7.82
10.00mm0.52cm³4.09g7.81
10.50mm0.61cm³4.74g7.83
11.00mm0.70cm³5.45g7.81
11.50mm0.80cm³6.22g7.81
13.00mm1.15cm³8.99g7.81
14.00mm1.44cm³11.22g7.81
15.00mm1.77cm³13.81g7.81
16.00mm2.14cm³16.73g7.80
17.00mm2.57cm³20.07g7.80
18.00mm3.05cm³23.84g7.81
19.05mm3.62cm³28.21g7.79
20.00mm4.19cm³32.68g7.80
21.00mm4.85cm³37.86g7.81
22.00mm5.58cm³43.47g7.80
25.40mm8.58cm³66.99g7.81
28.00mm11.49cm³89.73g7.81
30.00mm14.14cm³110.34g7.81
32.00mm17.16cm³134.04g7.81
35.00mm22.45cm³175.18g7.80
40.00mm33.51cm³261.57g7.81
45.00mm47.71cm³372.50g7.81
50.00mm65.45cm³511.00g7.81

If you want to calculate the weight for a certain diameter, you can assume a density of about 7.8.

GMTRCPLY Posts on Instagram

For a start, these are the links to the Instagram Posts by topic.

Magnetic Sticks

 » Introducing Magnetic Sticks 

 » Platonic Solids with Face Pyramids 

 » Icosahedral Star with short and long Magnetic Sticks 

 » Dodecahedron from Magnetic Sticks 

 » Cuboctahedron from Magnetic Sticks 

 » From Cuboctahedron to Octahedron 

 » Truncated Tetrahedron from Magnetic Sticks 

 » Truncated Octahedron from Magnetic Sticks 

 » Snub Cube from Magnetic Sticks 

 » A Pair of Snub Cubes 

 » Rhombicuboctahedron from Magnetic Sticks 

 » Icosidodecahedron from Magnetic Sticks 

 » Megaminx Twisty Puzzle inside an Icosehedron 

Geometric Dissections with Magnetic Sticks

 » Tetrahedron Dissection with Trido 

 » Octahedron Dissection with Trido 

 » Rhombic Dodecahedron Dissection with Creatice Whack Rhombi 

Magnetic Sticks and Creative Whack

 » Short Extended X-Ball 

 » Short Extended Y-Ball 

 » Short Extended Star Ball 

 » Short Extended Rhombi 

 » Short Extended Ball of Whacks 

 » Short Extended Eureka Ball 

 » Star Ball and Steel Balls 

 » Long Extended X-Ball 

 » Long Extended Y-Ball 

 » Failed Long Extended Star Ball 

 » Star Ball: Long Extended Rhombic Icosahedron 

Steel Balls and GeoBender

 » Hexagonal Tower with Steel Balls as Spacers

 » Hexagonal Castle: 16 GeoBender and 66 Steel Balls

 » Rack of Ten: 20 GeoBender and 60 Steel Balls

 » Pagoda of Hexagons: 18 GeoBender and 54 Steel Balls


Hans-Jürgen Reggel   ·   http://www.hjreggel.net/gmtrcply/   ·   Imprint   ·   2024-04-28 ~ 2024-07-08