Changes to Step #5

Edit by Grégoire Saunier —

Edit approved by Grégoire Saunier

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[title] Optional tools
[* 10] This step and the previous one list the ***optional*** tools that can be helpful during assembly. You can build the Bear frame perfectly without them.
[* 3] Files and deburring tool can be helpful to clean the printed parts.
-[* 7] It is good practice to clean and grease the bearings during the assembly.
+[* 7] It is good practice to re-grease the bearings during the assembly.
[* 10] We recommend to use lithium based lubricant that has a viscosity between 50 and 100mm2/s at 40 °C, NLGI class 2 and a thermal resistance of 100°C or more.
[* 5] A torque tool can be useful to ensure you apply max torque without damaging hardware.
[* 10] We recommend max 4.5Nm for the metal to metal assemblies (e.g. joining plate on an extrusion) and max 1.5-2Nm for printed parts (e.g. ''y_rod_holder.stl'' on extrusion).