Large Combination Lock - Remodel, Scalable

This is a complete remodeling of the large combination lock by @EGauthierEAO.

• This version requires no bolts, but rather snaps together
• It scales nicely to 50% unlike the original
• Face plate uses sunk numerals for better print
• Requires no support
• Uses friction tabs to eliminate free wheeling.

There is a plate you may print all the parts scaled to 50% which I recommend as ideal print size

All the parts are aligned for printing without support, I would recommend going slow with the smaller parts (push pin, LockDIsc)

Please comment and post your make! :-)

below is the development log, I am considering adding a gear system to enhance accuracy and add multiple complete rotations:

1.5

re-uploaded the plate (same parts) because one of the parts was not aligned

1.4

modified Base to have separate friction pole - easier printing and more robust; pole sliced to be easier to print on flat side

modified friction plates to have more friction 1.21 & 1.22

added chamfer for edge of poles on base plate for easier assembly

1.2

shorten track of latch by 2mm

rollers have rounded entrance with 3mm

Added Friction tabs + Spacer as part of top plate + Base adaptation for friction

Added full STL plate with 50% and correct orientation for print without support

1.1

removed redundant pole from base and top

reduced height of top roller main radius to clear top plate by 1mm

increased U bolt radius for the latch + latch hole radius

changed lock design including slide (now a U disc)

1.0

initial modelling of lock

3 direct motion rollers

face plate is with embedded numerals

top roller with slot connection to dial

no actual need for push2 - the push1 installed from the top is enough

Print Settings

Printer Brand:

Prusa

Printer:

Rafts:

No

Supports:

Resolution:

0.2

Infill:

Notes:

Need to print one of each for a complete model other than "MatchingPush1" which you should print 3 times

Category: Mechanical Toys