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Cake day: September 28th, 2023

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  • paf@jlai.luto3DPrinting@lemmy.worldToolhead part cooling design
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    11 days ago

    Cooling duct are used to precisely cool down plastic right after it was lay down without cooling down build plate (to avoid warping issue), this enable you to print bigger overhang without the need of support which end up in greater details.

    Unless you have knowledge to create CFD trace, I would avoid it, they were/are tons of poor designs like ring duct which are very ineffective/unprecise. You don’t need really high pressure but blower fan are better than radial fan for almost all designs is why you see them the most (they are also more than pressure which are to take into account but don’t recall).

    As of reducing print bed, it doesn’t, But if you wish to full the plate with parts and use the “print one object at a time” setting, it will reduce the number of object you can put on a plate, otherwise it will knock down parts.

    As an exemple, my first printer which was the OG ender 3 with petsfang duct get better overhangs than my bambulab A1 with stock duct.

    https://m.youtube.com/watch?v=8qnCQ7YZhVA













  • I don’t have this printer and those issues can come from different problems so hard to tell like this.

    Warping may cause layer issues as seen on pictures, stabilising bed temperature could help using an enclosure or maybe by putting your printer elsewhere, especially if it’s close to a colder spot in your house. If the layer issues we see on that picture still there when there is no warping, then reduce speed as it goes up. Tall print will tend to wobble more, which can make nozzle hit print, also nozzle path will not be as accurate after some traveling which can end up with similar layer issues.

    About your clogging issue, what temp (bed and nozzle) do you use for pla?

    You also have a ringing issue



  • If you keep a low infill, top/bottom layers will be rapidly more efficient but will cost more time and material than infill. The amount of wall is also to take into account. Few years back, I remember a test video showing that wall number were actually more efficient than infill. But depending how the test is being done, this might change.