You should use enough graphite lubricant so that the screw should appear black or dark grey. Here is a YouTube video that shows how the product is used and the typical applications.Īpply enough graphite lubricant so that the hue of the screw looks significantly darker than the original silver metallic color. We have found a product called Jig-a-Loo Graphite Lubricant that can help reduce friction on the FarmBot Z-axis leadscrew. We recommend using a dry graphite lubricant spray which will coat the surface with a fast drying coating of graphite to create a slippery surface that reduces the resistance of movement through the leadscrew block and also may decrease any noise from the leadscrew. Clean the leadscrew with a rag and then add some lubricant which can be purchased from a local hardware store. It is possible that dust and debris can build up on the leadscrew causing additional friction between the leadscrew and the leadscrew block. If the eccentric spacers are too tight, this will be very difficult to do. With the FarmBot powered off, you should be able to rotate the leadscrew by hand without too much effort. If the eccentric spacers are adjusted too tightly, then they will exert too much force onto the z-axis extrusion which can make it difficult or impossible for the z-axis motor to raise the z-axis. Check the z-axis eccentric spacersĬheck the eccentric spacers on the cross-slide that are used to adjust the v-wheels that support the z-axis extrusion. You may try halving the default max speed and doubling the default acceleration distance as a starting point, but because every FarmBot installation is a bit different, you will need to experiment to find the best values for you. Try lowering the z-axis MAX SPEED and ACCELERATE FOR a longer distance.
Carvewright z axis stall driver#
Adjust the stepper driver to deliver more powerġ. Movements may fail to complete, and in some cases the z-axis may even stall and then begin moving in the opposite direction. The z-axis frequently stalls when moving upwards.