"JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
04/19/2020 at 17:46 • Filed to: #3DPrinting
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"JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t" (jawzx2)
04/19/2020 at 17:46 • Filed to: #3DPrinting | 2
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The Dauphine is sold. I no longer have to fret about it...
In other news I just have to admit that Nylon MUST be baked immediately prior to use in a 3d printer.
Even storing a fully dried spool in a vacuum bag with des iccant pouches allows it to absorb enough moisture to suffer damaging hydrolysis when heated to printing temperature... Not to mention the steam bubbles :/ I print with the stuff infrequently enough that making/buying a filament dehydrator with spool holders and a feed gate is overkill, but I hate having to plan to put the spool in the food dehydrator for 8-12 hours before running a print :p.
SilentButNotReallyDeadly...killed by G/O Media
> JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t
04/19/2020 at 18:09 |
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Perhaps you can print up a little Dauphine as a memento?
Boxer_4
> JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t
04/19/2020 at 18:28 |
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The fact that a fair number of polymer materials are hygroscopic can be a pain. Cosmetic issues are no fun if you’re lucky. Some polymers like polyamides (Nylon) and polycarbonates can actually degrade and not perform as intended mechanically if not dried - at least for injection molding, it probably doesn’t help for 3D printing, either. We run into that all the time in injection molding at work. We run dryers that circulate warm air and have a desiccant bed - time and temperature vary by material and grade but its typically several hours in the low to mid 200 F range.
I’ve run into it myself
thermoforming as well - as I do not have a dryer currently
, I tend to avoid overly
hygroscopic materials all together.
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JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t
> Boxer_4
04/19/2020 at 19:02 |
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I do 95% of my printing in PLA, which is very, very low on the hygroscopic scale, but I also make some fu nctional parts that require n ylon (or occasionally polycarbonate)‘s physical properties, mostly the higher heat deflection temperature and flexibility. PLA is actually very strong where tensile strength is concerned, but quite brittle. 3d Printing really suffers most of the same polymer related difficulties that injection molding has to deal with, except we also have to deal intensional bed adhesion, and how to create it. Polycarbonate and nylon can both be bears to work bed adhesion on... ap parently some crazy bastards are doing Polypropylene in FDM printers... I know how hard it is to get anything to stick to PP from my work in industrial printing, I can’t imagine how frustrating and tweaky it must be to stick it to a bed for FDM.
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Boxer_4
> JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t
04/19/2020 at 19:38 |
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Most of my 3D printing experience is with Stratasys’ PolyJet system. It’s basically an fancy inkjet printer that UV cures layer by layer. Their system utilizes polymer analogs rather than actual commercial polymers. I’d love to be able to print in actual polymer materials rather than with polymers that are intended to simulate said materials - and I’d love to pay actual polymer prices, though at least I’m no footing the bill...
They handle adhesion a bit differently since their system uses a completely separate support material unlike most FDM printers. It’s a somewhat gummy material that is water soluble and fairly easy to remove. The print bed is powder-coated steel and each print job starts with a layer of the support material for the footprint of the part.
One of these days I’d like to get an FDM printer for personal use. It seems like we’ve reached the point where value for what you get capability wise can make sense.
pip bip - choose Corrour
> JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t
04/20/2020 at 04:35 |
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maybe it isn’t sold and he decided to sell it later?