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SmartRap Mini 2

Posted by orbitalair 
SmartRap Mini 2
February 20, 2018 06:33AM
Hi all,

I picked up the Smartrap mini about a year ago and tried to build one. Well 10 months, and a lot of CAD and build time later, I have revised and updated the parts for this little printer. I really like this design, even with its flaws. It is low cost, simple to make, and takes a minimalist approach. People like it years ago, and there were actually too many forks I think, people got lost in which parts to get.

I am sure this will make it worse, but I put the parts files and cad files on a google site and also on Thingiverse.

I have some additional improvements I would like to try so keep a watch out for these.

I can also make plastic parts sets for a small fee. It takes about 24hrs of plate time and 1/3-1/2 roll of filament.
PM or email if interested.

Thanks for reading. Feedback appreciated !

Webpage up in google space. CAD, notes, hardware list, marlin 1.1.7 configuration.h

I have also put a page up on ThingiVerse,
Re: SmartRap Mini 2
February 24, 2018 11:16AM
Some pictures,

Re: SmartRap Mini 2
March 09, 2018 08:15PM
Be sure to visit the google site. The assembly instructions are almost complete.

Setting stepper voltages and tuning are coming up next.

I am thinking screw sets, plastic sets and maybe rod sets are the things builders would want.

Do you think this is true?

If you have an old SRM, check out the Marlin page, for an updated configuration.h file.

Re: SmartRap Mini 2
March 09, 2018 11:11PM
There hasn't been much feedback here, since you published the SR2.
Who do you think, are your customers? Vintage 3DP collectors or Tech-Museum come to my mind.

Sorry to sound rude, but you must admid, this thing looks scary...at least not meant for serious 3D-printing.
Re: SmartRap Mini 2
March 10, 2018 08:54AM
Scary, not serious? I suppose. There does not seem to be much interest.
Vintage? The original designer started about 2013, the last thingiverse spins were in like 2016.

My machine, when running well, makes better parts than the Anet A2 I have. And I use my SR2 2-3times as often as the Anet, which is nearly everyday.

But remember in the overall landscape here there are dozens and dozens of designs, people tend to want the latest and greatest thing.
Some people have lots of money, if you are buying a Lulzbot for $3000, those folks dont reprap.

I think the audience is the person familiar with 3d printing, by using one, but who wants to know more, or wants to experiment.
That does kind of narrow the field doesn't it?

I wanted to learn all the ins and outs, but had little money, and this type struck me as requiring a minimum of space and materials.
There also seemed to be a great deal of lessons learned missing from the records, I was curious.

Thanks for listening.
Re: SmartRap Mini 2
March 12, 2018 04:45AM
Scary was a serious remark. There are so many parts sticking out here and there. Just one careless move and it's out off calibration or breaks apart. ( Just my gut feeling )
Re: SmartRap Mini 2
March 14, 2018 06:09AM
Don't be afraid. Its actually pretty tough !

The glass(I use glass as a build plate) can slide around, but I have simple idea to fix that.
I am trying to think of a simple, cheap effective way to get a heated bed and removable metal or plastic 'plates' using magnets.
This should fix the glass moving slightly.

Its open style is appealing to me. It actually sits in a corner of a desk very well.

These pics with wiring everywhere are part of the assembly pics, once all the wiring is bundled, its much cleaner.
Re: SmartRap Mini 2
March 14, 2018 06:14AM
Assembly page is mostly done. Enjoy.

It has a lot of bad potato pics. But should work, I tried to clarify the not-so-clear aspects.

SmartRap Mini 2 site
Re: SmartRap Mini 2
March 20, 2018 11:35AM
The next fix will be to the extruder. The bearing carrier will break or lose tension over time as it has no upper support.

Luckily someone on Thingiverse has already addressed the issue, so I will be testing that.

Also wondering if anyone cares about the zaxis switch location providing either a fixed zaxis on the rod, vs the one on the hotend.

The hotend mounted switch allows for using mesh leveling, but does anyone really care to use this?

I find I am not using that, and using a simple 1 touch probe to set z height and go print.
Re: SmartRap Mini 2
April 17, 2018 11:17AM
Some small revisions added to the Thingiverse site.
I found some errors as I printed out a few kit parts.

Plastic Parts for sale as a kit.
Screw Packs for sale as a kit.
See web page.



Assembly and tuning video
Better assembly doc/pdf, I dislike the slow loading webpage.
Mods for better parts that assemble without so many screws.
Mods for extruder bearing holder (still todo)
Mod to extruder for flexi filament, it will print TPU, but needs more support at the bearing/gear

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