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Revision to Bear FAQ

NATHAN M. DENKIN

== Which firmware should I use with my Bear frame and extruder? ==
-We will always recommend to use genuine firmware because this is the most tested firmware today for Prusa printers.
+We will always recommend to use genuine Prusa firmware because this is the most tested firmware today for Prusa printers.
For MK2.5S and MK3S we recommend 3.7.1
-For MK2.5 and MK3 we recommend 3.3.1
+For MK2S, MK2.5, and MK3 we recommend 3.3.1
'''/!\ Warning:''' Original Prusa firmware versions from 3.5.0 to 3.7.0 have critical issues that could make your Einsy or Rambo Mini unusable (or reduce its lifetime) and might affect seriously your printing experience. Some components can go higher than 100°C! If you are running one of these versions, immediately flash your firmware for the recommended version. Here is the link to this critical issue:
The Bear x-Ends are compatible with the Bear Extruder, MK2.5 and Mk3. They are also compatible with the BondTech Prusa upgrade extruder if you use the appropriate x-carriage.
-== I am using the Bear Mk3S Extruder (from the dev branch on GitHub), I cannot pass xyz calibration. How can I get it to calibrate? ==
+== I am using the Bear MK3S Extruder (from the dev branch on GitHub), I cannot pass xyz calibration. How can I get it to calibrate? ==
-This is a known issue, which is caused by the difference in height between the stock Prusa Mk3S extruder and the Bear Mk3S extruder.
+This is a known issue, which is caused by the difference in height between the stock Prusa MK3S extruder and the Bear MK3S extruder.
-There are two workarounds for this issue. Firstly, you can use a Mk3 firmware, pre Mk3S, such as 3.5.1, and perform the xyz calibration. Once calibration is passed, upgrade to the Mk3S firmware of your choice.
+There are two workarounds for this issue. Firstly, you can flash MK3 firmware, such as 3.7.1, and perform the Calibrate XYZ calibration. Ignore any messaging referring to a different machine being detected. Once calibration is passed, flash the MK3S firmware of your choice to access the full functionality of the MK3S.
-The second method is to mod the firmware to account for the difference in height. If you do not want to mod it yourself, there is a modded version available here:
+The second method is to modify the firmware to account for the difference in extruder height. If you do not want to modify it yourself, there is a modded version available here:
https://github.com/vertigo235/Prusa-Firmware/releases/
There is no official version of the Bear Extruder which suits the Mk2S.
-However there is a community developed version, from Ringo1908, which allows you to use the Mk2S hardware - hobbed drive gear, bearing idler and PINDA probe, in an extruder based on the Bear Extruder. You will need a 12V, 2-wire, 4010 fan for this extruder, to replace the stock 3010 fan.
+However there is a community developed version, from Ringo1908, that allows you to use the Mk2S hardware - hobbed drive gear, bearing idler and PINDA probe, in an extruder based on the Bear Extruder. You will need a 12V, 2-wire, 4010 fan for this extruder, to replace the stock 3010 fan.
https://www.thingiverse.com/thing:3252121
== Should I use a smooth or toothed idler on the Bear x-Axis? ==
-The Bear is designed to reuse as much of the original hardware as possible. As such, you may use the original 20T, smooth idler.
+The Bear is designed to permit use of as much of the original hardware as possible. As such, you may use the original 20T, smooth idler.
However I would recommend that you choose a Gates 2GT, 20T, toothed idler with dual bearings, to replace the Prusa supplied, 20T smooth idler with a single, central bearing.
-I use the genuine Gates idlers from E3D.
+I use genuine Gates idlers from E3D.

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