Carbon brush cap for ELU MOF112
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Carbon brush caps with M16x1 inner thread for the discontinued router ELU MOF 112. Redesigned from measurements.
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Do not print this, if you can buy original spare parts instead: Dewalt 868009-00 (Since they have been discontinued, this could be impossible.)
Print material: Select the most heat resistant, electrical insulating material that you can print. Heat resistance of common printing materials: ASA (98°C), ABS (85 °C), PETG (80 - 90 °C), PLA (60 °C)
This model is 3mm longer than the original coal caps. It provides additional space for silicone or any other thermal insulator. If you can get resistant silicone use that. Otherwise you can get creative and use a piece of glas, ceramics or a small flat stone.
Since the coal caps are touching the carbon brushes, they will heat up at the points of contact.
- Add silicone in the middle of the cap until the layer thickness of the silicone is 3 mm to 4 mm. (1/8 inch)
- Wait for the silicone to cure
- Screw on the coal caps as perpendicular as possible. The image provided is a bad example!! After screwing on the coal caps a second time (perpendicularly and tightly), the contact resistance improved.
Side note:
If you happen to own a MOF112 consider getting the bearings replaced (proactive maintenance). A bearing failure can cause irrepairable damage to the motor.