I need a small part printed with a Simple Metal

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I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Fri-06-Jun

Hello,

I am contemplating purchasing a Printrbot Simple Metal to print some small enclosures for an electronic device. The parts are only about 1.5" x 1" by 1/4" high so I'm concerned about how they'll look and dimensional accuracy. Before I invest in the printer, I was wondering if anyone with a Simple Metal would be willing to print one for me so I can see how they'd turn out. I'm more than happy to pay for your time, materials and postage. I'm in PA.

Thanks,
Randy
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I need a small part printed with a Simple Metal

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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Fri-10-Jun

RCBrust wrote:Hello,

I am contemplating purchasing a Printrbot Simple Metal to print some small enclosures for an electronic device. The parts are only about 1.5" x 1" by 1/4" high so I'm concerned about how they'll look and dimensional accuracy. Before I invest in the printer, I was wondering if anyone with a Simple Metal would be willing to print one for me so I can see how they'd turn out. I'm more than happy to pay for your time, materials and postage. I'm in PA.

Thanks,
Randy


From my vast experience of a couple of months: Dimensional accuracy for an enclosure is likely to be satisfactory; appearance will depend a lot on your standards and whether you want to do any postprocessing. Both will depend somewhat on whether the model is structured with deposition printing in mind. Post your models so folks can see what you want to produce.
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Re: I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Fri-11-Jun

Let me get the model finished up and I'll post the SLT, probably this weekend. Here's a pic of what I'm looking to do:

case.jpg


It's pretty simple, just a shell with a window in the base.

Thanks,
Randy
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Fri-12-Jun

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Re: I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Fri-12-Jun

Noted, will change to chamfers, thanks.

Randy
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Fri-12-Jun

Or fillet the chamfer, if you like keeping some of the curve.
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Re: I need a small part printed with a Simple Metal

Postby RetireeJay » 2015-Jun-Fri-14-Jun



That is a great reference! I just read the whole thing, and the explanations are wonderful.
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Fri-14-Jun

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Re: I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Sat-06-Jun

I've attached an STL file. If anyone with a Simple Metal or similar would be willing to print it, I'd really appreciate it. Shouldn't take much filament! :P

Thanks,
Randy
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Re: I need a small part printed with a Simple Metal

Postby JonS » 2015-Jun-Sat-09-Jun

If no one on this forum is willing to help you, you could get it printed by someone near you with a Simple Metal via 3dhubs.com.
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Re: I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Sat-11-Jun

That's a good tip, thanks.

Randy
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Re: I need a small part printed with a Simple Metal

Postby RetireeJay » 2015-Jun-Sat-11-Jun

I'd suggest you look on the Showcase part of the forum to see what printed products look like Also look at the thread "Printing Small." No one is ever going to mistake printed parts for injection-molded parts, but nevertheless they can be quite attractive. If you have a heated bed and print with ABS, you can do vapor smoothing and get some very nice-looking parts.

There are a variety of settings, particularly layer height, that affect print aesthetics. These same settings are available on all models of Printrbot. For the most part, aside from sheer size, the different models of Printrbot can all produce essentially the same quality prints. Some of them can run faster; the Simple will be the slowest of the family for a given quality.

It sounds like you're planning to make several of these objects, perhaps for sale as part of a larger assembly or project? If you are really interested in quantity production, then a larger model Printrbot can print more of them in a single run, tiling them on the bed.

If these parts will be joined with other things in an assembly, do you have expectations or requirements for mechanical strength? Tolerance for fit with other objects? Temperature tolerance? (PLA can't take the heat of the interior of a car in the summertime). Safety concerns? Food-grade materials? Requirements for color, opacity, surface sheen, etc?

If dimensional tolerance is your biggest concern, then the answer to your question is that you can fine-tune your settings (and model, if necessary) to get pretty tight tolerance, but don't expect repeatability to be better than one or two tenths of a millimeter from hobbyist machines.

I say all this because if your purchase decision depends on having a truly representative sample from someone on this forum, then you've got to be very thorough in how you specify what you need. A thousand of us could print your file, and there's be a thousand tiny, tiny (or big) differences between all of them.
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Printrbot Plus operational January 2013
Brass threaded rods (5/16" X 18) & nuts for Z axis
GT2 belts & pulleys
Cable chain to reduce probability of fatigue failure in wires
E3D V5 Hot End, 0.4mm nozzle, also 0.8 and 0.25 in use occasionally
PB fan mount + 40mm fan -- using printed mount adapter, not the E3D supplied fan
Injection molded extruder gears
Optical Z "endstop" (custom designed and built)
Have used many pounds of T-Glase filament. Now also doing some work with Ninjaflex SemiFlex
Print on glass with Scotch Craft Stick or other glue stick
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Re: I need a small part printed with a Simple Metal

Postby RetireeJay » 2015-Jun-Sat-11-Jun

RCBrust wrote:That's a good tip, thanks.

Randy

And there are services like Shapeways which can print your part with pretty close dimensional tolerances and reasonable prices - but it won't be using the FDM process like Printrbots.
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Printrbot Plus operational January 2013
Brass threaded rods (5/16" X 18) & nuts for Z axis
GT2 belts & pulleys
Cable chain to reduce probability of fatigue failure in wires
E3D V5 Hot End, 0.4mm nozzle, also 0.8 and 0.25 in use occasionally
PB fan mount + 40mm fan -- using printed mount adapter, not the E3D supplied fan
Injection molded extruder gears
Optical Z "endstop" (custom designed and built)
Have used many pounds of T-Glase filament. Now also doing some work with Ninjaflex SemiFlex
Print on glass with Scotch Craft Stick or other glue stick
"My next printer is..." Prusa i3 MK3, upgraded to MK3S
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Sat-15-Jun

RCBrust wrote:I've attached an STL file. If anyone with a Simple Metal or similar would be willing to print it, I'd really appreciate it. Shouldn't take much filament! :P


It certainly won't take much filament if it's only 1.24mm wide, but I don't think that's what you intended. What units did you dimension in, and what's the intended size?

Also (though I know nothing of your application and could be talking through my hat), consider drafting the inside, or the top half of the inside. It's not an injection molded part, so it doesn't need it for mold release, but it might need it for ease of assembly. Could also draft the opening for the same reason.

How does it attach to... whatever it's attaching to? Do you need posts or screw bosses?
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Last edited by lairdb on 2015-Jun-Sat-16-Jun, edited 1 time in total.
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Sat-15-Jun

RetireeJay wrote:And there are services like Shapeways which can print your part with pretty close dimensional tolerances and reasonable prices - but it won't be using the FDM process like Printrbots.


That has quickly become my process for work stuff: print, test, adjust, print on the Simple Metal, then once we're all satisfied, send to Shapeways for "production".
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Usually PLA on kapton with AquaNet.
Usually Cura.
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Re: I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Sat-16-Jun

The units are inches, so it's 1.24"x0.91". I have ordered a slightly different version from Shapeways to see how they look but if I can get it good enough with a PSM, the per piece cost will be a lot less.

Thanks,
Randy
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Re: I need a small part printed with a Simple Metal

Postby Mach-Chris » 2015-Jun-Sat-17-Jun

it was a lot smaller than I though it would be haha,

Not perfect, but could be improved a little with some tweaking. As RJ stated, this is really just one representation of how it could look coming off a simple. There are lots of settings that could be tweaked, layer heights could be changed, nozzle sizes even if you wanted. Comes down to what you want to use them for, and how esthetically pleasing you want them to be.

~17 minutes 100% infill. PLA .100 layer height.
There is a small gap between the inner and outer walls, simplify3d didn't seem to want to fill it, it's likely too small an area (Could probably fix this by increasing the number of perimeters).
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Sat-19-Jun

First: Everything RJ said, in spades. You know that old joke about the control panel for men vs. women?

Man-Woman-Control-Panel.jpg


That's the difference between sending it to Shapeways and printing it on Printrbot (or any other FFD printer, AFAIK.)

I didn't get the hollow wall; I sliced in Cura at 0.10 layer, 0.8 shell, 0.6 bottom:

IMG_0966.JPG


IMG_0972.JPG


If I were to knock off that little flake on the near corner, it would be pretty good.
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Usually PLA on kapton with AquaNet.
Usually Cura.
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Sat-19-Jun

Since it sounds like the OP is thinking about short run production:

At 0.10 layer height, it took about 25 minutes with the settings I had. Cura says it can fit 20 of them on the print bed at a time, and about 10 hours to print all 20, consuming 27 grams of plastic (about $0.67 worth.) The electricity probably cost more than the PLA.

2015-06-06 17_24_07-cura.png
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Mods: blower fan with self-remixed blower duct
Usually PLA on kapton with AquaNet.
Usually Cura.
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Re: I need a small part printed with a Simple Metal

Postby Mach-Chris » 2015-Jun-Sat-19-Jun

Printed another one after tweaking a few things :)

Simplify 3d likes to autocalibrate the extrusion width to .48 unless you tell it otherwise, so I did, and the hollow walls went away.

18minutes, same settings as previous. Nice job lairdb!
:)
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Sat-19-Jun

Mach-Chris wrote:Printed another one after tweaking a few things :)

Simplify 3d likes to autocalibrate the extrusion width to .48 unless you tell it otherwise, so I did, and the hollow walls went away.

18minutes, same settings as previous. Nice job lairdb!
:)


Good infill on the walls -- what do you think is going on with the edges?
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Simple Metal Kit, heated bed
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Usually PLA on kapton with AquaNet.
Usually Cura.
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Re: I need a small part printed with a Simple Metal

Postby Mach-Chris » 2015-Jun-Sat-20-Jun

Part of it was my Z calibration. I haven't been using the simple as much lately and its due for a once over, I use my Plus more frequently.I believe part of the issue is this roll of filament i'm trying to burn through with random prints. It has been giving me headaches since day one. Needless to say, I haven't gotten another roll from these guys since.
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Re: I need a small part printed with a Simple Metal

Postby RCBrust » 2015-Jun-Sat-20-Jun

Wow guys, pretty nice! If either of you are willing to send me one, PM me and I'd be happy to PayPal you to cover it.

Thanks,
Randy
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Re: I need a small part printed with a Simple Metal

Postby lairdb » 2015-Jun-Sun-13-Jun

I've got him covered -- making a few at different layer heights, etc.
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