Prepping The Hot End And Power Supply; Preparing The Hot End - SeeMeCNC Rostock MAX v2 Assembly Manual

3 – Prepping the Hot End and Power Supply

Preparing the Hot End

The hot end for your Rostock MAX v2 3D printer uses Permatex Ultra Copper RTV to hold
both the heating resistors and the temperature sensor (the thermistor) in place. Because it takes a few
hours for the RTV to set completely (I recommend letting it cure over night), it's a good idea to get that
started now. You'll also want to find something ahead of time that you can use to hold the hot end
nozzle up that won't be disturbed while the RTV cures.
For this step, you'll need the parts out of the hot end pack. This includes the hot end itself, the
two heating resistors and the tiny pack with the thermistor and it's PTFE tubing.
You'll start by coating each heating
resistor with RTV as shown in Fig. 3-2.
You'll want to try to keep the
resistor leads free of RTV, but don't skimp
on the RTV application.
Fig. 3-2: Coating the heating resistor with RTV.
Rostock MAX v2 Assembly Guide
Fig. 3-1: RTV & heating resistor.
This stuff is goopy and sticks to
everything! Keep a paper towel or ten
handy.
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