Soluble support with PVA and BadPrinter2

We tested the PVA material (Polyvinyl alcohol) to create the support for PLA sample object with strong overhangs (an helical object) that normally is in impossible to print.
We want to prove the multimaterial capability of the BadPrinter2.
We used Cura as slicer with our script for double colour that, during the tool change, moves the hotend to a “parking” area and cooldown the unused one to reduce as much as possible the oozing during the next print phase.
The PVA is a very flexi material, so the retraction has to be used with attention; as you can see in the photo, there are a lot of “strings” of material generated during the material change, but the PVA is water soluble and they can be easily removed in the post-processing without impact on the quality of the PLA part.

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In the following video you can see the post-processing operation of removing the PVA support by submerging it into cold water. We know that leaving the part in warm water for about 24 hours cause a complete dissolving of the PVA, but we want to show that also after about 30 minutes in cold water the material became slippery enough to remove easily the support at the interface between PVA and PLA.

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What’s new in the second batch of BadPrinter2

We completed the first six BadPrinter2 of the second batch.
All the machines are completely designed, assembled and tested by us, so our production rate is quite small; this is the reason why we are proud when we see those machines standing in line, ready for shipment. Half of them are headed to Germany; we are happy to start spreading also some BadPrinter2 across Europe.

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Two big improvements were included in this new batch; a completely redesigned heated bed and the new E3D v6 hotends.
There are some other minor changes included in the design to improve the reliability and usability of our printer.

Heated Bed: The “old” Alu sheet had done its work, but it was, sometime, tricky to adjust; also the tempered glass was not completely planar due to the heat treatment.
We switch to an 8 mm milled aluminum plate with side thrust pin on both sides in order to retain firmly the glass, but allowing a quick removal of it.
The square glass is replaced by a not tempered one (more planar) with 5 mm thickness with the option to have also a more stylish smoky glass.

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v6 hotends: in the same way, the v5 hotends are very good quality extruders, but the new one are more compact, clean (no messy kapton on the hot part to retain the thermistor in place) and with the bowden tube that goes all through the cold part there is an improvement when printing elastic and soft filament.
For the same reason, also the filament feeder bowden coupling was replaced by the bigger plastic one that allows the bowden tube to goes closer to the feeder gear.

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BadDevices a MakerFaireRome!

Ci siamo, BadDevices è alla MakerFaireRome!

Saremo presenti con la BadPrinter2, il nostro entusiasmo e la voglia di raccontarvi il nostro progetto!

Venite a trovarci nell’area GUTENBERG Zona L (stand 6a)
Potete seguirci anche sul nostro profilo Twitter@BadDevices e unirvi alla conversazione con gli hashtag #MFR14 e #BadPrinter2

Presto sarà online il nostro webstore dove potrete vedere e acquistare la BadPrinter2 e i relativi accessori.

Scarica QUI la brochure della nostra BadPrinter2

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[English]

Here we are, BadDevices is at MakerFaireRome!

We are here with the BadPrinter2, our enthusiasm and desire to tell you about our project!

Come visit us in GUTENBERG Area; Zone L (booth 6a)

You can also follow us on our Twitter account @BadDevices and join the conversation with the hashtag #MFR14 and #BadPrinter2

Soon it will be online our webstore where you can see and buy the BadPrinter2 and accessories.

Dowload HERE the brochure of our BadPrinter2
 

Summertime Printing

It’s summer, but BadDevices never goes to holiday; we are trying to obtain the best from our BadPrinters by printing some big and nice object and we are also concentrating in tweaking the correct parameters for dual printing.

Here some of our latest pieces

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And some work in progress, like the awesome multi-part GE jet engine (the main fan is missing in the picture) and some “mistery” object 🙂

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Mission Accomplished!

Finally the first ten production BadPrinter2 are completed and running!
We are tired for the hard work of this long week end, but very happy and proud for the result!
It’s a very motivating goal, after months of design, trials, errors and the final rush of assembly. We learn a lot and this experience will be precious from now on, in order to facing the upcoming launch of the webstore and the future batch of production.

Here some images of the BadPrinter2 alligned on the workbench; hope you like the “new” purple and grey color.

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Then some useful tool produced by the machine, like a rigid template to allow the correct placement of the Caution sticker or the customized BadDevices Allen wrench for an easy bed leveling.

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First Machine in custom color, completed and running

This morning we complete the first BadPrinter2 of the production batch; the new transparent panels with machine name is very nice.
This is one of the custom color we decide to try different from the “classic” green theme.
The test is now under final testing and everything is going well, confirming the latest design improvement introduced in the series printers are working.

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First batch almost finished

Another week and a full weekend of hard work to complete the first batch of ten BadPrinter2. The machines are almost finished; this is also a very useful test of our production capability, and it was very useful to verify the area of improvement of the production process, but with are very happy now on.
The two prototypes of BadPrinter2 assists us in producing the parts needed without a break and we think that this can prove the reliability and the printing capability of this printer.

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For the first batch we decide to make five machines with the “classic” black/green baddevices theme colours, but we try new combinations and the result is quite promising.

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Stay tuned for official launch of the website that we hope can happen soon

Long week-end, Hard work

It is some time after the last post, but we are very busy working on the pre-series version of the BadPrinter2, in particular these three days of hard work.
After the MakerFaireRome we evaluate and identify all the areas where the BadPrinter2 can be improved: we found a lot of minor improvements that can allow us to make the machine more precise, reliable and easy to maintain.
Starting from the extruder we decide to introduce the possibility to trim the spring tension, so we are making some prototypes and the results are very good, we need to try it in the machine testing the extrusion during real prints.

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We are also reviewing the metallic frame; we want to switch to a complete laser cut steel frame, so there are some work to do in accomodating all the parts in the new frame.
We will maintain the winning H-Gantry style and the very good E3D hotend.

Moreover, this week some new material arrived: PVA, Nylon and Rubberlike material; we start with some test print with red rubber from Plastink and we discover it is an interesting material: it prints easily and it is quite flexible.

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Next days we will try with Nylon 🙂