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Mathews Engineering
Free 3D Printing Models:
Helical Gear Toy 3D Model:
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Print two (2) each of the gear and fender washer and one (1) Holder and one (1) press in shaft.  This toy is best if the gears are a different color.   The screws are M3x8mm WN5451 screws for plastics but a similarly sized wood or sheet metal screw might work.
HelicalGearToy_Holder90Deg.step
File Size: 51 kb
File Type: step
Download File

HelicalGearToy_PressInShaft.step
File Size: 14 kb
File Type: step
Download File

HelicalGearToy_FenderWasher.step
File Size: 5 kb
File Type: step
Download File

HelicalGearToy_Gear.step
File Size: 1187 kb
File Type: step
Download File


Hydraulic Bottle Jack Knob 3D model:
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HydraulicKnob.stl
File Size: 11422 kb
File Type: stl
Download File


Fancy slip-on foot 3D model for wooden 2x4 end:
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TwoByFourFoot.stl
File Size: 314 kb
File Type: stl
Download File


4-9DB Bin Box Divider 3D model for Argrov Box (or similar) Bins:
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4-9DB_BinBox.stl
File Size: 2835 kb
File Type: stl
Download File

Parametric FreeCAD 1.0 file for making bin box dividers like above but of any size (like Argrov 4-DB):
BinBoxesParametric.FCStd
File Size: 159 kb
File Type: fcstd
Download File


Replacement Feet for the HP9810A Calculator 3D Model (Resin Printed):
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left_foot_03.stl
File Size: 1395 kb
File Type: stl
Download File

right_foot_03.stl
File Size: 1395 kb
File Type: stl
Download File


Tool caddy 3D model for Ruthex type heat set insert soldering iron tips
using (7) M4x10mm screws, washers, and nuts
Optional: High temperature silicone caps for changing tips while they're still hot.
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heat_set_tool_holder.stl
File Size: 899 kb
File Type: stl
Download File


Master Link Storage/Box Handlebar Plug for Mountain Bikes for 18.75mm ID Bars
Store a spare chain master link for the next time your chain breaks on the trail.
This print is an interference fit.  If the fit isn't right for your bars, edit the FreeCAD file until you have a snug fit.
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chainlinkstorage02-body.stl
File Size: 152 kb
File Type: stl
Download File

chainlinkstorage02.fcstd
File Size: 332 kb
File Type: fcstd
Download File

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