I used RKP (reverse king pin) style trucks but I rekon a similar process could be applied to TKP (traditional king pin) trucks. Polymorph is a plastic that melts in hot water. The harder you go, the greater the feedback. This Instructable shows how to make your own custom and low cost pivot cups. This is OK as the plastic can be sculpted and remelted many times. Did you make this project? But peel it instead! This next step took me multiple attempts to get right. You will need to dismantle your truck.Remove the kingpin nut, roadside washer and bushing, hanger and old pivot cup. The lever of the lever suction cup helps making a lower pressure inside the cup, and makes it stick better. Deep Hole in a Small Box, a Different Take on the Infinity Mirror. Since they are both acting as a pivot, the material used should be lubricated, which is why we use our self-lubricating WFB compound. Here you'll find how I have transformed weak basic suction cups into strong lever suction cups with 3D printed pieces. There are multiple brands that offer upgrade pivot cups for many models of longboard trucks. Depending on a truck’s design, skateboard pivot cups can be used to accomplish several things. Therefore I decided to make my own pivot cups, custom fit to this hanger and baseplate combo.NOTE:It's not advised to ride random hangers and baseplates together as their is the chance the hanger can pop out of the baseplate when sliding or cornering harshly. Homemade Disadvantages: You need access to the proper tools and the knowledge to accomplish the task. The black trucks pivot didn't have the flash finish. …, Riptide APS & Krank BushingsBushings are an essential part to any setup, and when properly dialed in Aftermarket Disadvantages: More expensive than the alternatives and they are not offered in every skateshop. this is definitely very helpful. You will need to cut the excess of and sand to achieve a rounder more aesthetic shape. Aftermarket Advantages: High performance pivot cups with the tightest tolerances and longest life. They allow a truck to turn smoothly, whilst holding alot of the riders weight. Since they are both acting as a pivot, the material used should be lubricated, which is why we use our self-lubricating WFB compound. If you replace the 'nail' with a proper bolt and nylock nut, or a metal pin and print with PETG or ABS I think you'll find it holds up better. Use a tissue to wipe clean the pivot on both the hanger and baseplate. I would like to discuss something with firstname.lastname@example.org. I then wondered if it could become as strong as lever suction cups, and I decided to transform these regular suction cups into lever suction cups with my 3D printer. It's important to maintain the pivot cups to keep your ride smooth and responsive, whilst keeping the movement of the board reliable and predictable. Go skate and enjoy yourself ! Press the soft plastic that was squeezed out around baseplate hole back in to ensure good formation of shape.Leave the plastic to cool and harden for about 5 min. This is great I'm going to have to build my own. Pivots can also be categorized into two types, a Cup and a Tube. …, The "pivot cup" is simply a closed-ended style where as a tube is open-ended. The granuals will stick to each other and can be scooped out as a blob.At this point I like to kneed the plastic, making sure it's well mixed with no pockets. My hanger had an Allen key hole. It depends on where you want to place the suction cup. Without an end point, all the responsibility for positioning the king pin in the center of the bushing seat now falls on the bushings, so the lack of a pivot end point front loads the bushings to support the hanger position. On the gif you can clearly see that the "grabbing piece" goes up and down when the lever is used; this way it can pull up or push down on the suction cup and increase or decrease the pressure inside.