Description
The PTFE Tube is inserted into the Heat Break Tube to maintain the filament temperature as low as possible until it reach the heat block
TIP: Some PTFE tubes varies from 4.0 to 4.1mm outer diameter, in this case, put the PTFE tube into the deep freezer a short time, then insert it into the Heat Break Tube.
To extract it, you will need a 2.5 or higher drill bit…
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