Mhh, the fan is usually mounted to the left - in your build it is to the back.
This leads in turn to the problem seen in picture 2: you can't fold the fan, as it bumps against the hot end. So that's a clear "not ok" here.
Attention: The lower lip of the fan duct needs to be opened, so that the air will hit the printed object and _maybe_ the lowest part of the tip of the nozzle. That's why it has 2 folding lines.
Regarding the pin: The Pin on which your fingers rest in the picture is to tighten down the filament (the plastic material). As you don't have any material inserted into the extruder, as one sees in the bowden tube above, the pin will just turn and be kind of loose, as it does not really push against much (except a small piece of delrin).
Don't try to turn it tight now (without filament) as you could maybe break the delrin part by accident.
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ian 32
looks ok to me.
which pin do you mean ?
Ian
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