Help to understand what is going on...
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What kind of part cooling fan do you have?
I'm thinking that it can't reach or has a difficult time to reach that spot and cool it. -
@r3play I have made it for turbofan. Maybe you could be right and I need to change it's design...
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Ideas how to improve? I only have 5mm of clearance to make that fan, so it is so "flat"
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Maybe ditch the side vents and just make two large slits on the opposite ends.
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@r3play bulls eye! Thanks for your idea
Redone my cooling fan and now everything is good even at 70mm/s with PETG -
@wyvern This worked:
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@briskspirit Awesome to hear!
It was a wild guess from my side, but it seems I was right
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My ft5 was useless with one 360 blower. It would cool the nozzle so much it would error or the layers were like stacks of straw.
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@wyvern Mmm... explain please. Which one are you using now?
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I was using a backpack blower on the stock hotend which was too high on the block. Someone made a modified one for the Volcano hotend and that worked perfectly, I have since switched to a MK10 hotend and now use a Thorped turbine cooler that works well, however because I had to mirror the part, I couldn't use the stock fan mounting position, I Macgyvered it with some blue tack- hey, 100 hours later and it's still firmly attached.
One day I will design my own, but my cad skills are still pretty limited.
