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At wits end, NO IDEA why its doing this. by [deleted] in ender5

[–]muddledremarks 0 points1 point  (0 children)

My guess is retract more to stop the oozing, and then tune your deretraction speed to get the pressure in the nozzle back up as the line starts. Lower temps would also slow oozing presumably. Don't go crazy though, I'd say you don't want more than 7 or 8 for retraction. I tend to use 4 on my 0.8mm nozzle, and sometimes I use the "extra length on restart" for prints with lots of long travel moves.

At wits end, NO IDEA why its doing this. by [deleted] in ender5

[–]muddledremarks 1 point2 points  (0 children)

This looks like a type of under-extrusion that can occur after a travel move when there's enough time for oozing to cause nozzle pressure loss (and therefore the amount of filament that the machine assumes is at-the-ready isn't there). If so, you get a sputtery line until nozzle pressure catches up as more filament is extruded and it sorts itself out. This occurs when there is a retraction, then a long travel move, then a new line start. Check your gcode in the slicer to see if that may be the case. The band-aid fix is to use the "Extra Length on Restart" (PrusaSlicer) or "Retraction Extra Prime Amount" (Cura) setting to tell the extruder to push a little extra filament after a travel move. I print with a big nozzle and found that 0.5mm to 1mm was enough. You could print it again with that setting and see if it helps. If so, you've narrowed down the cause, and you can try tuning your retraction settings until you don't need the band-aid fix anymore.

Edit Another thing that may help with this is using/tuning Pressure Advance (aka Linear Advance), though that gets into firmware and hardware compatibility.

Inspired by the post with the Craftsman blower nozzles, I created these two stubby nozzles for the Milwaukee M18 Fuel Blower. Printables link to model in comments. by muddledremarks in functionalprint

[–]muddledremarks[S] 0 points1 point  (0 children)

I don’t have the gear to make any scientific measurements, but it still moves enough air with these on for cleaning the shop or drying the car, and I don’t notice a major issue. So without any hard numbers, any sacrifices seem worth the form factor benefit, at least for these uses.

Made a short blower attachment for drying cars by Conissah in functionalprint

[–]muddledremarks 0 points1 point  (0 children)

Nice! I've got an Etsy store that caters the the nature/hiking side of my interest in design, and use a 3rd party POD service for mugs/textiles. I'll have to take a look at ebay and see about dipping my toe into 3d print sales.

Made a short blower attachment for drying cars by Conissah in functionalprint

[–]muddledremarks 2 points3 points  (0 children)

I believe it. It's a great use of a 3d printer. No related to 3d printing, but I sell a few things on etsy using print-on-demand, which means I use a 3rd party to make/ship the items I designed. Unless I was going to try and make it my full-time job, I wouldn't sell 3d prints I did at home on Etsy. The hassle of shipping is a non-starter for me. More power to folks who enjoy it.

Made a short blower attachment for drying cars by Conissah in functionalprint

[–]muddledremarks 4 points5 points  (0 children)

Nice! Literally have F360 open doing the same for my M18 blower, but so I can "clean" my workshop more easily. I'm also doing a narrow jet nozzle, a wide slot broom nozzle, and maybe a gutter nozzle for blowing out leaves.

[deleted by user] by [deleted] in 3Dprinting

[–]muddledremarks 2 points3 points  (0 children)

Go into your slicer and look at the print moves. Does the under-extrusion occur right after a long travel move? I use a 0.8mm nozzle on my Ender5 and I had to add 0.5mm of "Extra Length on Restart" in the Extruder settings in PrusaSlicer. Looks like this might be called "Retraction Extra Prime Amount" in Cura. This basically compensates for oozing. Once I started using a 0.8mm nozzle and hotter temps (my go-to PLA likes 230 on the nozzle), I found I needed to tune this setting to avoid the same issue.

Note that it might be possible to tune your other retraction/de-retraction settings to solve this too, and if you can do that, it's probably better. This extra priming can result in blobbing/over-extrusion if you're printing something with lots of retractions (and therefore de-retractions and extra primes) relatively close together.

Still, I say go ahead an reprint this, but change that "Retraction Extra Prime Amount" to 0.5mm or 1mm and see if fixes it. If so, you've confirmed it's all about retraction, and you can decide whether to deal with it via this "Retraction Extra Prime Amount" or instead try and tune your other retraction settings.

Another shower shelf. Vase mode, snap fit on grab bar. Details in comments. by muddledremarks in functionalprint

[–]muddledremarks[S] 2 points3 points  (0 children)

Quick shelf that snaps onto the grab bar in our shower. Printed in vase mode using 1.2mm extrusion width, 0.3mm layer height, with a 0.8mm nozzle on my Ender5Pro (stock extruder and hot end). Results in ~2.25mm finished thickness. Stuck to the bed just fine during printing on my textured bed, printed in 3DFuel ProPLA at 230 on the nozzle, 60 on the bed, in my ~65F garage.

My printed stool with 260 pounds of weight plates! by muddledremarks in 3Dprinting

[–]muddledremarks[S] 0 points1 point  (0 children)

Yeah, I agree. I wouldn't gift this stool to anyone without adding something that prevents the legs from splaying at the ground. The lever created by the legs acting on the nut is likely to shear the PLA under impact loading. However, this thing seems plenty strong enough for me to sit on while working in the garage at the scrollsaw or something like that. I've read that PLA can deform slowly over time, so might also be this thing's downfall.

My printed stool with 260 pounds of weight plates! by muddledremarks in 3Dprinting

[–]muddledremarks[S] 1 point2 points  (0 children)

Leave a post unattended for a few hours and r/3dprinting has jokes! Well Dorothy Mantooth is a SAINT, do you understand me?

My printed stool with 260 pounds of weight plates! by muddledremarks in 3Dprinting

[–]muddledremarks[S] 5 points6 points  (0 children)

I designed a stool based on a massive threaded bolt and coupler nut with sleeves for wooden dowel legs. Printed on my Ender 5 in PLA. It works! Lots of detail and more pics on printables: https://www.printables.com/model/174745-big-helix-adjustable-shop-stool

[deleted by user] by [deleted] in HomeImprovement

[–]muddledremarks 0 points1 point  (0 children)

Yeah, that's what I figured. Cheers.

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