PVA Support Material Test

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PVA Support Material Test

Postby John@Raise3D » Fri Sep 23, 2016 7:52 am

We have finished more tests with PVA support. Here are some pictures and we will release a video on our YouTube channel.
We have printed 3 models, including engineering parts and car model (Taco truck).
Here is how it looks like when just out of printer.

Remove support.

Still some residual is hard to remove.

Soak in water.

Then after half an hour and some brushing, here are how the models look like.

Some basics about we have done.
1. Yellow filament
Raise3D Premium PLA; In left extruder
2. PVA filament
In right extruder
We will release it on our online store once we have those in stock.
Modified based on Default Standard 1.75mm PLA V2 Hot End Settings.
1. Right nozzle at 180C
2. Bed 70C
3. No Raft
4. Pillar support; set dense support layer number to 4
5. in 'support' tab, X and Y offset all to 0
6. Slow down the support printing speed by 50% (mainly for the PVA part)
7. Use glass side of the build plate and use PVP glue stick to apply an adhesive layer
After the print is done, remove most of support and wipe wall and then soak the model in water (no HOT water). You can use a brush and some tweezers to get the wet and gooey residual out and get a clean bottom surface.
So far, with PVA support, the most useful application is to get a smooth surface for parts and also for models with complex structure/irremovable support.
For example, the taco truck, the structure is really complicated with lots of details and you can't remove the support if you are using regular material. With PVA, you can get things out and clean.

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Re: PVA Support Material Test

Postby Trhuster » Fri Sep 23, 2016 1:29 pm

Support looks very strange, like a fuzzy hariball ;). How can it hold up anything? I have some PVA from 3DPrima to try out soon, will report back about my findings.

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Re: PVA Support Material Test

Postby Vicky@Raise3D » Fri Sep 23, 2016 4:03 pm

That's ooze. A lot ooze. This filament seems to be very sensitive to temperature. But support structure is fine.

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Re: PVA Support Material Test

Postby walshlg » Fri Sep 23, 2016 4:46 pm

thanks for the great test!

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Re: PVA Support Material Test

Postby Amos » Fri Mar 10, 2017 5:28 pm

Why was this done on the 'glass side of the build plate' rather than the BuildTak?
No surface treatment necessary?


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Re: PVA Support Material Test

Postby Vicky@Raise3D » Sun Mar 12, 2017 2:47 pm

We find that buildtak doesn't stick PVA very well. So we turn to glass side with glue.

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Re: PVA Support Material Test

Postby firesped » Sun Mar 12, 2017 5:02 pm

good to see there has been good testing for this. I think that you need to market this filament (as it seems you have produced raise3d brand filament) in a special way. as Jetguy has commented in other PVA threads, PVA goes bad fast even if you take every precaution to reseal it. so it would seem having a giant spool of it is not a good idea. As to the exact amount that you would want to put on a spool at a time, I don't know though. With how expensive it was previously been, I have given up on the idea of using PVA after my failed attempt to use it. One of my original plans was to print complex small toys with PVA as support.
RL name: Michael Nolen

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Re: PVA Support Material Test

Postby Vicky@Raise3D » Mon Mar 13, 2017 10:20 am

Thanks for you suggestion. Will ask sales to check whether small spool of PVA can be achieved on our site soon.

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