Key brand for the crane control panel (PKT, Telfer)

Problem: PKT series consoles and similar hoist control stations are equipped with a protective mechanism: without the inserted key, the control circuit is open. In a construction site or workshop, these keys are the most lost part. The operation of a crane or hoist stops due to the lack of a cheap piece of plastic, and the purchase and delivery of new keys takes up precious time. Solution: This digital 3D model is an exact copy of the key for PKT remote controls. It allows you to print a duplicate in 15–20 minutes and immediately resume operation of the equipment. The geometry of the model is verified for clear operation of the contact group inside the remote control. Model specifications: Compatibility: Standard push-button stations of the PKT series (PKT-20, PKT-40, PKT-60) and most hoist control panels produced in the CIS and Bulgaria. Purpose: Activation of the control panel (closing the power circuit). File format: STL (high precision, optimized for printing without supports). Construction: The model is reinforced at the bend so that the key lasts longer than the original cast version. Recommendations for 3D printing: The part is subject to constant mechanical stress (insertion/removal): Material: PETG, ABS or Nylon recommended. PETG is the best option due to its viscosity (the key will not be brittle). PLA is not recommended as it can become brittle from frost or high shop temperatures. Filling: 100% (Solid). The part is small, so maximum density will ensure durability. Layer height: 0.1 – 0.2 mm. Orientation: Print flat for maximum strength of the key's tendrils. Benefits: Against downtime: Print a supply of 10 keys in one hour and forget about the problem. Savings: The cost of plastic for one key is pennies. Strengthened version: A key printed from good material often lasts longer than the factory one.