3D printing tips for the lulzbot mini

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Das Troll
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3D printing tips for the lulzbot mini

Post by Das Troll » Fri May 24, 2019 12:23 am

I just purchased my second lulzbot mini because I broke the first one cleaning it. This post will be about upkeep and tips to keep from fucking it up.

First a word on how the lulzbot mini auto levels itself for even prints. Each edge Image has a washer that is connected to the printer itself via wires. When the print head comes down to touch these washers, a connection is made telling it to stop the Y axis and to move onto the next washer. Once all the washers are detected the printer then auto levels the bed for you. This is very important.

One of the biggest problems 3d printers have is an unclean printer head. Often times a little bit of the printer filament gets out and cooks to the head. This causes an unclean connection to be made with the washers and the printer just keeps moving down the Y axis until it starts to grind the belt and motor. At this point cancel the print and shut it off if you have too. If it keeps going, at best you will get a lobsided part. At worst it will drag the print nozzle across the print bed, possibly damaging it and your bed.

So how do you keep it from doing this? Well for the inside of the print nozzle there are strips of cleaning filament with directions on how to use it. These strips will burn all the gunk out from inside of the print head and keep it clean from the inside. This has never really been a problem for me. The real problem came with keeping the outside of the print head clean. I used a wire brush on the head that cleaned it wonderfully. But if you are paying attention you will know that was a huge fuck up on my part. DO NOT USE A WIRE BRUSH! Since there is electricity going through the print head, I basically blew the rambo board on the printer. It messed the whole thing up at that point. It didn't know where to stop on all axis. X, Y, Z, all of them would go past the point where they should causing more damage to my printer. I tried to replace the board but I think it's too messed up at this point. I will have to send it in for maintenance.

My second printer I had more luck with. I started to get the washer mashing when I switched to nylon for printing. This time however I used a piece of fine grit sand paper to get all the gunk off along with a abrasive sponge. This was done after I disconnected all power sources and flicked the button just in case there was some stored power. Once I got it nice and clean, it worked fine. Keeping your print head clean is very important for the life of your printer.

For now, this is all I have until I think of more.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Fri May 24, 2019 6:46 am

Ballpark what does a 3D printer like this run?
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Das Troll
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Fri May 24, 2019 12:07 pm

Helladamnleet wrote:
Fri May 24, 2019 6:46 am
Ballpark what does a 3D printer like this run?
Used? About 600. New about 1400. Lots of people just look at the print speed and the resolution of the printer and get the cheaper 200 dollar printers. At that point they realize how much of a pain in the ass printing is. All the little extras that the higher end printers bring to the table make printing so so much easier. Auto leveling heated beds, a higher print head temp range, the ability to print other types of filament, ect ect. I personally wish I had the money to do a taz 6 with a 12x12x11.5 ( i think) inch bed. That would have been super helpful for my projects.

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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Fri May 24, 2019 1:32 pm

This is the kind of stuff I print BTW, DnD terrain.

Image

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Fri May 24, 2019 1:50 pm

Is that some of your work?
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Sat May 25, 2019 2:26 am

Helladamnleet wrote:
Fri May 24, 2019 1:50 pm
Is that some of your work?
Not models no, I'm not that artistic. I did print that though.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Sat May 25, 2019 7:53 am

Wow, I never would have guessed it was 3D printed. Usually there's, like, super obvious thick lines in between each layer. I actually see the hype and appeal now, because that's better quality than injection molding can usually achieve.
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Sat May 25, 2019 11:13 am

Helladamnleet wrote:
Sat May 25, 2019 7:53 am
Wow, I never would have guessed it was 3D printed. Usually there's, like, super obvious thick lines in between each layer. I actually see the hype and appeal now, because that's better quality than injection molding can usually achieve.
It's all about print resolution at that point. The lower the resolution the more you see those lines. Where 3D printing starts to fall apart is on small prints and things with over hangs. For example if you were to print a T with no supports under the "arms" of the T then it would just start to spit filament out into the air. There always has to be something under the head for it to print well.

I'd still rather have resin, metal, or even plastic to use for models. They're of much higher quality. There are certain tricks where you can smooth out prints though to where you cant see the print lines at all. One of them is using acetone fumes to melt it.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Sat May 25, 2019 11:51 am

Could you, in theory, make the supports part of the 3D print and trim the gate after? I've only ever done injection molding. Thinking about it though, I bet you could 3D print something to make a mold out of for injection molding, which would be bad ass and save a lot of time. Tooling is what cost the most.
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Sat May 25, 2019 1:25 pm

Helladamnleet wrote:
Sat May 25, 2019 11:51 am
Could you, in theory, make the supports part of the 3D print and trim the gate after? I've only ever done injection molding. Thinking about it though, I bet you could 3D print something to make a mold out of for injection molding, which would be bad ass and save a lot of time. Tooling is what cost the most.
Your slicer (the program you use to actually print the 3d model) has the ability to add supports. It will automatically build scaffolding under the hanging parts and you can trim it off later. It takes a little more effort to get a good print though because of the smoothing you need to do though.

I never thought of creating a mold for injection. I'm sure that would work but I don't know how well though. I would however like to see how well it works with resin dipping 3d printers. That would be neat.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Sat May 25, 2019 1:50 pm

Now I want a 3D printer :eek:
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Tue May 28, 2019 3:08 am

Helladamnleet wrote:
Sat May 25, 2019 1:50 pm
Now I want a 3D printer :eek:
Don't skimp then and don't just buy it either. A lot of people buy them thinking about all the cool things they're going to make then either get dissolutioned by the quality of the print or don't know what to print. I specifically got one so I could print out dungeons and dragons stuff. Everything else just kinda branched from that.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Tue May 28, 2019 6:43 am

Yeah, after seeing yours I see the potential of a non-bargain bin unit. It reminds me of when I worked at SMC and they bought, like, an $85,000 3D printer.
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Tue Jul 02, 2019 1:08 pm

I have to replace my print head and PEI print bed sheet. Heres hoping.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Tue Jul 02, 2019 3:01 pm

Good luck. You ever watch Gear Down For What? They 3D print these incredible gear boxes
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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Wed Jul 03, 2019 3:25 am

Helladamnleet wrote:
Tue Jul 02, 2019 3:01 pm
Good luck. You ever watch Gear Down For What? They 3D print these incredible gear boxes
Nope, never even heard of it. I just spent the last hour and a half getting all the glue off my print bed. I'll finish the rest tomorrow.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Wed Jul 03, 2019 6:41 am

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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Wed Jul 03, 2019 1:14 pm

Helladamnleet wrote:
Wed Jul 03, 2019 6:41 am
I clinched up a bit when he bent his print bed. Mines made out of glass.

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Re: 3D printing tips for the lulzbot mini

Post by Das Troll » Thu Jul 04, 2019 1:32 am

Fucking PEI pad was a pain in the ass and the print head required rewiring. I hate Lulzbot documentation.

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Re: 3D printing tips for the lulzbot mini

Post by Helladamnleet » Thu Jul 04, 2019 8:56 am

Das Troll wrote:
Thu Jul 04, 2019 1:32 am
Fucking PEI pad was a pain in the ass and the print head required rewiring. I hate Lulzbot documentation.
That's my struggle with cars. For something so many people own there's ZERO information on things you wouldn't be able to find in a regular ass book that comes with the car.
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