2 and 3 Digit Mechanical Counter

prusaprinters

<p><strong>General</strong><br>In search for a mechanical counter to match with my engine models, I came across this beautiful prototype by <i>3D Printy</i>: <a href="https://www.printables.com/model/97885-mechanical-counter-prototype">Mechanical Counter Prototype by 3D Printy | Download free STL model | Printables.com</a>.<br>&nbsp;</p><p><strong>Printing and Assembly</strong><br>For assembling instructions of the counter, I gladly refer to his excellent YouTube video:&nbsp;</p><figure class="media"><oembed url="https://youtu.be/M1kdm8jpN80"></oembed></figure><p>I used the “GLUE”-option, no metal parts required.<br>Some parts were slightly modified, to assure a smooth running counter.<br>Also the counting order was reversed, as a consequence of the spur gear drive.</p><p>The counter is glued to the case on an angle. Take care of the gears to run smoothly.</p><p>I printed the model on a PRUSA MINI, with PLA+ filament, layer height 0.15 mm.&nbsp;<br>I use Hard Plastic Glue where necessary.</p><p>For assembled and exploded views, use .stl files 0… 01... 02 (do not print).<br>Printing and assembly in alphabetical order (A1 → X1).</p><p>Dimensions (2 digit model): &nbsp;111 x 55 x 108 mm.<br>Weight (2 digit model): &nbsp;0.1 kg.<br><br><br><strong>3 Digit Model</strong><br>Use the parts in “<i>X1-Parts for 3-Digit Counter.stl</i>” to make a 3-digit model.<br>These parts replace "<i>B1-Case.stl</i>", “<i>B2-Case.stl</i>”, “<i>B4-Axle.stl</i>” and “<i>B9-Window.stl</i>”.<br><br><br><strong>Matching Models</strong><br>This counter can be matched with my engine models <a href="https://www.printables.com/model/152321-4-stroke-flathead-v-twin-engine">4 Stroke Flathead V-Twin Engine by Bootjevaarder | Download free STL model | Printables.com</a> and <a href="https://www.printables.com/model/135305-4-stroke-flathead-engine">4 Stroke Flathead Engine by Bootjevaarder | Download free STL model | Printables.com</a> by glue-ing the “<i>D1-Adapter-Engine.stl</i>” to the crankcase sprocket of the engine and optionally using “<i>C2-Sled.stl</i>”.<br>A match can also be made with the gearbox model <a href="https://www.printables.com/model/144943-constant-mesh-two-speed-gearbox">Constant Mesh Two Speed Gearbox by Bootjevaarder | Download free STL model | Printables.com</a> with the “<i>D2-Adapter-Gearbox.stl</i>”.<br>&nbsp;</p>