Register a SA Forums Account here!
JOINING THE SA FORUMS WILL REMOVE THIS BIG AD, THE ANNOYING UNDERLINED ADS, AND STUPID INTERSTITIAL ADS!!!

You can: log in, read the tech support FAQ, or request your lost password. This dumb message (and those ads) will appear on every screen until you register! Get rid of this crap by registering your own SA Forums Account and joining roughly 150,000 Goons, for the one-time price of $9.95! We charge money because it costs us money per month for bills, and since we don't believe in showing ads to our users, we try to make the money back through forum registrations.
 
  • Post
  • Reply
Dia de Pikachutos
Nov 8, 2012

I know I'm a few pages late, but regarding terminal crimping tools I found the IWISS SN-025 to be great for dupont-style terminals because the dies have an elliptical half and a "ω" half, so the insulation is wrapped nicely and the conductor is smooshed neatly in a single action.

It's probably not up to NASA standards, but the terminals I've crimped with it have gracefully dealt with a fair bit of punishment.

My PA-09 is great for JST-XH terminals, but each terminal needs the conductor and the insulation crimped separately, which in my case is a problem because manual dexterity is not my strong suit. Don't get one for dupont terminals, it makes a mess of the insulation on them, and half the time they won't fit in the plastic shrouds properly.

Adbot
ADBOT LOVES YOU

slurm
Jul 28, 2022

by Hand Knit

Ethics_Gradient posted:

Slicing question:



I printed this last night, and the lip on the inside where the lensboard is meant to go came out looking like dog doo. I think the supports may not have really connected with it the way they were meant to; when I went to peel it off the build plate the piece/brim came up, leaving the supports for the lip still stuck on the plate. It's also very thready and "loose" looking on the underside.

Would I be better off printing it upside down? That was how it originally was, but was worried it'd be hard to get the supports off neatly enough if they were so shallow.

You might have luck printing it standing on one of its corners also

Isometric Bacon
Jul 24, 2004

Let's get naked!
Been experimenting with reverse engineering some parts on my car.

Here you can see some popup headlight protectors printed in TPU. The originals were 30 years old, also made of TPU and generally have become brittle and snapped over the years.







Curious to see how printed ones will withstand all sorts of weather. I'm assuming I could dye it if I wanted to get a matching red colour, or perhaps looking into creating a mould.

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


I have poor impulse control and got an ender 3 v2 recently, I'm either an idiot (probably) or FDM printing is significantly more complex than I expected it to be because I've had nothing but trouble with the thing.

I was able to print a benchy Friday and it came out fine* but now I can't even get the bottom ring that goes around the model to print right. I have no idea what changed between then and now. I replaced the stock springs with stronger ones per every recommendation and I have a cr touch but I'm still not entirely sure I'm using the thing right.

Any tips on how to stop making hosed up tiny boats?

*It was stringy towards the top

SubNat
Nov 27, 2008

If you can snap some pics it'll be easier to diagnose.
First layer shenanigans can be stuff like z-offset / the nozzle printing too high or low, leading to stuff like poor adhesion on the first layer. But it's easier if we can see what's happened.
(Temps, unclean bed etc etc are other possible factors.) Actual leveling and z-height/offset are 2 different things, which isn't often very well conveyed. (Autolevel corrects for the bed not being perfectly flat, z-offset is +/- height on top of that.)

I'd suggest getting superslicer and running the calibration-tests it has, it's a very informative step by step process that I found super helpful, since you can tweak a lot of the tests.

Dr. Fishopolis
Aug 31, 2004

ROBOT

Len posted:

I can't even get the bottom ring that goes around the model to print right.

In what way? Can you send a pic? Is it not sticking to the bed?

slurm
Jul 28, 2022

by Hand Knit

Len posted:

I have poor impulse control and got an ender 3 v2 recently, I'm either an idiot (probably) or FDM printing is significantly more complex than I expected it to be because I've had nothing but trouble with the thing.

I was able to print a benchy Friday and it came out fine* but now I can't even get the bottom ring that goes around the model to print right. I have no idea what changed between then and now. I replaced the stock springs with stronger ones per every recommendation and I have a cr touch but I'm still not entirely sure I'm using the thing right.

Any tips on how to stop making hosed up tiny boats?

*It was stringy towards the top

Is your bed thoroughly cleaned and degreased? Are you printing in a particularly hygroscopic material (PETG and nylons are the most common)

insta
Jan 28, 2009

Len posted:

I have poor impulse control and got an ender 3 v2 recently, I'm either an idiot (probably) or FDM printing is significantly more complex than I expected it to be because I've had nothing but trouble with the thing.

I was able to print a benchy Friday and it came out fine* but now I can't even get the bottom ring that goes around the model to print right. I have no idea what changed between then and now. I replaced the stock springs with stronger ones per every recommendation and I have a cr touch but I'm still not entirely sure I'm using the thing right.

Any tips on how to stop making hosed up tiny boats?

*It was stringy towards the top

I'm sorry people are giving you hope that the fix is something you can do, when in fact you just need to wait until the moon is back to waxing gibbous. Don't overcomplicate things!

Dr. Fishopolis
Aug 31, 2004

ROBOT
Boy i sure was feeding too much amperage to my extruder motor. Sure sucks that it was mounted to a PETG bracket that warps to hell at 80c. God dammit.

At least steppers and metal brackets are way cheaper than when I first did this conversion.

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


It's gotta be a leveling thing right?

Hadlock
Nov 9, 2004

Your z offset needs to go down at least 0.3mm

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


I just don't understand how I went from this



To not even being able to get a bottom layer when nothing changed.

But I moved the z offset up and will see what happens

Enos Shenk
Nov 3, 2011


So Prusa's little mini design contest is Airtag accessories. Those things are pretty expensive, it'd be a shame if you lost one. So I made a holder to clip two Airtags together.

https://www.printables.com/model/259270-double-safe-airtag-holder



I'm having way too much fun making the silliest poo poo I can think of for their contests.

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


Much better!

Rexxed
May 1, 2010

Dis is amazing!
I gotta try dis!

Yeah, as you're seeing, the first layer is the most important one, which is why there's so many tools and guides for getting good first layers. It's possible for there to be other issues with a print (like your first benchy is a little stringy) but you can't print anything if it comes off the bed or won't lay down onto it. Once you get stuff printing you can address other issues. Strings like that are often retraction settings, temperature, or wet filament. Likely one of the first two, but could be anything.

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


Still came out stringy but the bottom didn't gently caress up and you can read the words. I don't have enough of what the printer came with to do another so I'll open up the roll I bought and try to dial it in and fix that tomorrow

RabbitWizard
Oct 21, 2008

Muldoon

Len posted:

Still came out stringy but the bottom didn't gently caress up and you can read the words. I don't have enough of what the printer came with to do another so I'll open up the roll I bought and try to dial it in and fix that tomorrow
This might solve all your problems.


Does anyone know why these screws are in backwards?



I thought the person who built mine hosed it up (they managed to install the X-Axis wrong so I wasn't surprised), but apparently it is supposed to be like that according to every picture I can find. The bearings are still turning fine after I turned the screws around and it is printing normally. Just wondering if there is a reason I can't figure out.

Paradoxish
Dec 19, 2003

Will you stop going crazy in there?

Len posted:

Still came out stringy but the bottom didn't gently caress up and you can read the words. I don't have enough of what the printer came with to do another so I'll open up the roll I bought and try to dial it in and fix that tomorrow

Don't futz with anything until you try a better roll. Stringing in particular can be indicative of really lovely filament (or just a filament that needs some bizarro settings to print well), so you may find that your good filament prints drastically better with less stringing even though you've changed nothing at all.

Tiny Timbs
Sep 6, 2008

Len posted:

I just don't understand how I went from this



To not even being able to get a bottom layer when nothing changed.

But I moved the z offset up and will see what happens

That’s Z offsets for you

0.2mm makes the difference between a good print and a bad print

insta
Jan 28, 2009

Paradoxish posted:

Don't futz with anything until you try a better roll. Stringing in particular can be indicative of really lovely filament (or just a filament that needs some bizarro settings to print well), so you may find that your good filament prints drastically better with less stringing even though you've changed nothing at all.

It's usually just wet filament, and that has next to nothing to do with vendor or filament age. Most filament is wet.

Marsupial Ape
Dec 15, 2020
the mod team violated the sancity of my avatar
I actually put that lovely filament in a dehydrator over night. The little minifig I printed with the filament came out perfect. The crumbled in my hands like chalk.

simmyb
Sep 29, 2005

2 years with basically no issues on this Mini clone. Finally had to pay the tax I guess.

Marsupial Ape
Dec 15, 2020
the mod team violated the sancity of my avatar
It’s wild I have a thing in my house that can make poo poo like this. Still several inches to go, but I am happy so far.



Obviously, it will need some post processing love with a heat gun and fine round file for the threading, but I doubted it was possible when I first viewed in Cora.

Edit: the bottom is also perforated, hence the raft. I just could get the first layer to since to the glass right.

Marsupial Ape fucked around with this message at 11:28 on Aug 15, 2022

mattfl
Aug 27, 2004

Voron is finally back up and running after being down for almost a month.

Stealthburner upgrade and bed fans added.

Holy cow do the bed fans make a huge difference. Can get my chamber up to 55/60 degrees in about 10 minutes now whereas before without fans it'd stuggle to get to 40.

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


I sliced it with the retraction settings on this page with the temp at 210 and this is my result



Which way should I tweak the settings?

Dr. Fishopolis
Aug 31, 2004

ROBOT

Len posted:

Which way should I tweak the settings?

I think your retraction settings are fine, just turn the temp down by 5c at a time until the stringing stops. You can print a temp tower to dial this in as well.

Vaporware
May 22, 2004

Still not here yet.

Any ideas on this weird nozzle impression at the last corner? I thought it could be overextrusion, but I've dialed the Extrusion Multiplier back, releveled the live-Z and it's still doing it. It's also oozing quite a bit more than 0.4 did, but I suspect that's just how it is with a bigger nozzle.

Maybe more retraction? I used to have 35mm/s feed and 35 retract, but I reverted it to the suggested 25mm/s retract when I changed to 0.6 to make sure I didn't introduce new problems. i'm running mk3s with the new 2.5 alpha. I suppose I can try the traditional slicer to see if it's some sort of bug.

Isometric Bacon posted:

Been experimenting with reverse engineering some parts on my car.

Curious to see how printed ones will withstand all sorts of weather. I'm assuming I could dye it if I wanted to get a matching red colour, or perhaps looking into creating a mould.

Both of those work. I suspect you'll get a better final product if you create a mold and cast it, since you'll have the opportunity to fill the layer lines.

Vaporware fucked around with this message at 18:22 on Aug 15, 2022

Dr. Fishopolis
Aug 31, 2004

ROBOT

Vaporware posted:


i'm running mk3s with the new 2.5 alpha.

The beta just came out and fixes some issues with small fill areas, give it a shot!

Len
Jan 21, 2008

Pouches, bandages, shoulderpad, cyber-eye...

Bitchin'!


Dr. Fishopolis posted:

I think your retraction settings are fine, just turn the temp down by 5c at a time until the stringing stops. You can print a temp tower to dial this in as well.

I downloaded this this temp tower gcode but so far it looks like it's just printing at 200f. What did I do wrong?

Edit: nevermind it just changed to 220 after the first layer

Vaporware
May 22, 2004

Still not here yet.

Dr. Fishopolis posted:

The beta just came out and fixes some issues with small fill areas, give it a shot!

Awesome, I've been checking every time I remember, which isn't true that often lol

Dr. Fishopolis
Aug 31, 2004

ROBOT

Vaporware posted:

Awesome, I've been checking every time I remember, which isn't true that often lol

It's only four hours old, don't worry about it :D

w00tmonger
Mar 9, 2011

F-F-FRIDAY NIGHT MOTHERFUCKERS

Dr. Fishopolis posted:

The beta just came out and fixes some issues with small fill areas, give it a shot!

Hopefully this fixed the holes I'm seeing when printing calibration cubes and benchys on my 0.6 nozzle ender 3 using Arachne

Marsupial Ape
Dec 15, 2020
the mod team violated the sancity of my avatar
Check this poo poo out.




Vaporware
May 22, 2004

Still not here yet.
looks good. that's the pop filter you were talking about?

I had diamond plate textures that came out like that top surface, I had to reduce my print speed to somewhere around 50-70%. Not sure why, it seemed like it was printing an O, then retracting and trying to move to the next. It probably couldn't find a good nonoverlapping path for a continuous run.

sides look great, just hit it with a butane torch and those strings will poof without melting the pattern.

Edit: I just forgot and launched a 1 hour print after upgrading to the beta rather than running the 10 minute first layer test to see if that problem is fixed lol

Marsupial Ape
Dec 15, 2020
the mod team violated the sancity of my avatar

Vaporware posted:

looks good. that's the pop filter you were talking about?

Yup. I was very skeptical that it would come out looking like anything, but I guess I got my poo poo straight and it came out good. Honestly, it’s a shame a foam wind screen is going over it. Printing the body now. It it works as advertised, I am going to print several more. I don’t care about the look, but the design forces the user to use good mic technique and is an excellent pop filter. There is just something about the round head of a microphone that breaks people’s brains and they don’t know how to use it no matter how much gentle coaxing you give them and no I’m not mad I have to always edit out your nose whistles because you rest the tip of your nose on the mic or do a special gain set on your mic because you are scared of the goddam thing and I have to edit out the extra room noise you pick up. Nope not all. Not mad.

But, you point an end-address mic like the SM7B at them and they automatically know where to talk directly at it and the grill keeps the mic capsule away 3 inches away from their lip smacking at all times.

Vaporware
May 22, 2004

Still not here yet.
I totally understand, I used to have to baby a few shures for voiceovers at work.

Looks like my top layer is still underextruding, and that last nozzle move is still causing a divot where it picks up to move to home / the next layer.

Rockman Reserve
Oct 2, 2007

"Carbons? Purge? What are you talking about?!"

Does an Elegoo Mars (red case, black base if it matters - I think there were a few revisions before the Mars 2+) need a z-spacer to install a flex plate?

Vaporware
May 22, 2004

Still not here yet.

Vaporware posted:

Looks like my top layer is still underextruding, and that last nozzle move is still causing a divot where it picks up to move to home / the next layer.

looks like this spool of PLA works better at 210 rather than 215. I got good top layers on last night's print. what a weird fix.

csammis
Aug 26, 2003

Mental Institution

Rockman Reserve posted:

Does an Elegoo Mars (red case, black base if it matters - I think there were a few revisions before the Mars 2+) need a z-spacer to install a flex plate?

Yes. Depending on flex plate supplier there might be an STL for you to print one. I just used a couple of spare M3 spacers since a) I had them on hand and b) I didn't even think that other 3D printing folks would have had this exact problem.

Adbot
ADBOT LOVES YOU

cruft
Oct 25, 2007

Is there any reason not to continue using the Z axis limit switch with a CRTouch/BLTouch installed? The Z homing is soooo sloooow now, and the Z limit switch is still installed and hooked up, so I'm tempted to comment out this "#define USE_PROBE_FOR_Z_HOMING" that every single YouTube video I found says I need uncommented (but nobody says why).

Am I going to cause a citywide catastrophe if I do this?

  • 1
  • 2
  • 3
  • 4
  • 5
  • Post
  • Reply