Rostock Max Assembly Guide
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21.7 – I purchased some high-temperature silicone tape from the local auto parts store and
made a thermistor sandwich using that tape as well as a “mayo” layer of RTV.
Figure 103 - Thermistor sandwich with RTV sauce!
21.8 – The RTV takes about an hour to set up, so while the thermistorwich is cooking, let’s get
the power resistors prepared and installed in to the Hot End. You’ll want to cut a few strips of aluminum
foil just a little bit narrower than the resistor body is wide. You’ll need to wrap the resistor in foil in
order to get it to fight tightly in the milled holes that are in the Hot End. Please take special care to
make sure that any of the aluminum foil does not come into contact with the leads coming out of the
resistor. This can cause a short circuit and then we could bounce into a star and that would cut your trip
pretty short. Wouldn’t it, kid?
21.9 – Once you’ve got the resistors pressed into place, coat each end with RTV in order to seal
them to the Hot End.
21.10 – The thermistor is installed in one of the two small holes drilled perpendicular to the
resistor chambers on the Hot End. Fill one with RTV and press the thermistor in to place as shown
below. Make sure you’ve let the RTV cure at least one hour before moving on to the next step.
Figure 104 - Resistors & Thermistor sealed in with RTV.
