March 7, 2026
Description
This is a slim, fully mechanical drink counter designed in standard credit card format.
It fits in a wallet, pocket, or on a badge reel and is made for one-handed use in bar or event environments.
The counter mechanically counts from 00 to 99 or from 99 to 00.
The outer dimensions remain unchanged from the original version.
In this V2 version, the push buttons have been re-positioned and the mechanism now counts both up and down.
• Counts up and down
• Re-positioned push buttons
• Rubber bands are now required for proper function
• Similar slim <4 mm credit card profile
• Reworked axle system with snap-fit axle connectors for improved long-term reliability
• Integrated reset function on the backside
• Grooves for a flat screwdriver allow safe disassembly if needed
• Designed and tested for printing on textured plates
This version allows you to track what you’ve had or what’s left.
Each intentional trigger press changes the count by one.
One side increases the count.
The other side decreases it.
The trigger geometry is designed to avoid unintentional activation in a pocket or while moving.
Rubber bands are now necessary for reliable operation.
They provide the return force and tension required for consistent counting in both directions.
Best results are achieved using the Bambu rubber bands (1Pcs 0.9x16mm and 2Pcs 1,4x20mm).
Other rubber bands may work, but tension and routing may need adjustment.
A reset function has been added to make returning the counter to 00 much faster.
On the backside of the counter, push the reset slider upward.
This disengages part of the mechanism and allows one of the number wheels to rotate freely.
You can then manually rotate the wheel until the display returns to 00.
This is not a one push reset, but it is significantly faster and easier than repeatedly pressing the trigger until the counter rolls over from 99 to 00.
The body is only aprox. 4 mm thin and follows standard credit card proportions.
All parts snap together and are fully printable.
A mounting hole allows attachment to a lanyard or badge reel, making it suitable for festivals, events, bar staff, or drinking games.
Assembly is straightforward and intuitive.
The push buttons have been re-positioned compared to the original version to accommodate the new up and down mechanism.
• Track your drinks during a night out
• Count drinks served during a shift
• Run drinking games without arguments
• Keep score at pub quizzes
• Track rounds at the table
• Count shots owed
• Track days until a party
• Use it as a “drinks left” counter
When someone asks how many you’ve had, you don’t guess.
You know.
You can also change the other text lines or add new text with the text tool.
Then proceed as usual: Slice plate → Print plate
Use the reference images to position the inner parts correctly.
Route the three rubber bands as shown.
Use a small amount of lubricant for smother operation.
The two halves snap together by pressure.
Make sure all three axle connectors snap firmly into place.
If disassembly is required, small grooves are integrated into the housing.
Insert a flat screwdriver carefully into the grooves and gently pry the halves apart.
• The model is designed to print reliably on smooth, engineering, and textured build plates
• No special plate is strictly required
• For maximum dimensional consistency, a smooth or engineering plate may still provide the most predictable results
• The build plate must be clean to ensure reliable adhesion and dimensional accuracy
• Oils, fingerprints, or residue can negatively affect the first layer
• If adhesion issues occur, a light layer of 3DLAC or a comparable adhesive spray can be used
• For small parts, remove them immediately after the print finishes while the plate is still warm
• Cool the plate by moving it gently in the air
• While the parts are still slightly warm, carefully bend the plate to release them
• This method minimizes stress and reduces the risk of damaging fine details
• If a scraper is used, proceed slowly and with care
• Avoid applying excessive force, especially on small gear teeth
• If any gear teeth bend during removal, straighten them carefully before assembly
Following these recommendations improves print reliability, dimensional accuracy, and long term performance of the mechanism.
The right dial wheel and the ratchet pin are printed with small supports that must be fully removed before assembly. Any remaining support material or rough edges can interfere with the ratchet movement and prevent the mechanism from operating smoothly.
After removing the supports, check that both parts move freely and clean up any small leftovers with a knife or file if necessary. Even tiny remnants can affect the reliability of the counting mechanism.
License:
Standard Digital File License
Liviu
