NuVat by Evert

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Eddie J
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NuVat by Evert

Post#21 » Wed Nov 12, 2014 8:23 pm

Sounds great :D When do we sign up? ;)
If more tests are needed - happy to help as a Spot HT resin user - its very reactive and harsh to the PDMS. Would be great to test with the new coating.
Good luck with the final trials.

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tim.yoshi
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Post#22 » Wed Nov 12, 2014 10:22 pm

Mike is right - what he talks about I also see the most important to test - while small items is likely easier to separate from some other substances, big cross sections (100 or 70 xy base plate) and very tall vertically identical prints are the hardest to PDMS. If this NuVat will work as it should - then we got likely the biggest leap forward after inventing B9C and v1.2 :)
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anthid
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Post#23 » Thu Nov 13, 2014 2:32 am

I'm also interested. I am located in Europe, so I don't know if I am in the wrong side of the Atlantic!

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lobby
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Post#24 » Thu Nov 13, 2014 4:04 am

Should we expect any different results printing at 30 microns with pure cherry?

(I don't print at 50 microns, nor do I use 1:1 red:cherry mix)

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mikej
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Post#25 » Thu Nov 13, 2014 4:20 am

That's one of the things I want to test. Ideally it will print the same (or better). With the additional benefit that the coating won't wear out (at least no where as quickly as the pdms).
Measure Twice, Cut Once.

kirkrhino
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Post#26 » Thu Nov 13, 2014 4:54 am

Yes, good point Mike.. that's the only question in my mind is if there is a wear factor involved? If so how long would the coating last before it begins to wear off?

I commend his efforts, as it's by no means a simple task to remove the old glass, the only way is to break it out, chip and scrape away, takes quite an effort... Unless he is just stacking new glass over the top of the existing? However doing that may not work due to the possible refractions between the two plates, and the possibility for resin to enter between them.

Also I assume requires machine that works well with overlift? As some of the 1.1 machines may not? Just thinking out loud..

Assuming all testing continues to go well- what an exciting promise for moving this technology forward in a huge way! Thank you Thank you!

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Robert Howle
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Post#27 » Thu Nov 13, 2014 6:19 am

The first glass removal will be the hard one (taking out original). After that u will just be dealing with silicone (Evert will supply small amout with each glass). That is the plan as of now.

Robert
Dance like nobody's watching!

lswatson
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Post#28 » Fri Nov 14, 2014 9:53 am

Restarting my 200mm tall print at 50 XYZ with B9 Red.
I did everything wrong for my first attempt. Build plate way to thick, long exposure times better suited to my small stuff, and (this is a good one)
I put the rubber part on the wrong part of the sweeper. Thus the new coating was being swept by raw metal. When I discovered this, I was sure the coating would have been destroyed. I was wrong. Its in perfect shape. Its pretty tough stuff.
My print failed some hours in due to the thick build plate, which I discovered when I woke up, about 10 hours into the print. Needless to say, the resin was mush with floaters.
So I remodeled the print, cleaned everything up and will start again soon. By reducing exposure time, I hope to get it under 30 hours.
If I had been using PDMS, my vat would be dead as door nail, as I doubt it would have stood up to hours of printing with no rubber edge on the sweeper blade.
Feel pretty lucky to have dodged that self inflicted bullet.

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Robert Howle
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Post#29 » Fri Nov 14, 2014 10:01 am

Got mine today (B9 vat with coated glass window) will print this evening to see how it works. Can't wait to start.

Robert
Dance like nobody's watching!

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noahbern
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Post#30 » Fri Nov 14, 2014 10:48 am

I need this!

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akgold
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Post#31 » Fri Nov 14, 2014 2:19 pm

Robert was selected to test the glass just so you all know so he can put it through it's paces.
I'm so far behind I think I'm First !!

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RobertH
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Post#32 » Fri Nov 14, 2014 4:01 pm

I hope he is able to make it work like its suppose to...will be soo nice

lswatson
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Post#33 » Sat Nov 15, 2014 12:54 am

Operator error again!! Woke up this morning to another failed 200 mm print. I failed to put in more resin before retiring.
So here we go again.
Other than that, everything looked good.

Just started another attempt. This time with MadeSolid Black. It will print in 12+ hours rather than 27 hours.
And I'll be up to monitor.

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tim.yoshi
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Post#34 » Sat Nov 15, 2014 2:58 am

Fingers crossed :)

P.S. Survived bare metal sweeper? Oh my god! This is TOUGH!
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lswatson
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Post#35 » Sat Nov 15, 2014 4:05 am

Quote from tim.yoshi on November 15, 2014, 09:58
Fingers crossed :)

P.S. Survived bare metal sweeper? Oh my god! This is TOUGH!


Hi Tim,
It ran for over 12 hours, bare metal.
3 hours in and the Black print looks good. No sweeper this time.
L

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mikej
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Post#36 » Sat Nov 15, 2014 4:28 am

Larry, can you post an image of the Layout you are currently printing?
Measure Twice, Cut Once.

lswatson
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NuVat by Evert

Post#37 » Sat Nov 15, 2014 7:20 am

Quote from mikej on November 15, 2014, 11:28
Larry, can you post an image of the Layout you are currently printing?


Here is a screen shot from Rhino. Total model height is just under 200mm.
Also attached is a pendant cast in sterling. Somehow the second image didn't make it.
The build is at 52% and everything looks very good.
L

Image

lswatson
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NuVat by Evert

Post#38 » Sat Nov 15, 2014 7:25 am

Let's try this again.

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Robert Howle
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Post#39 » Sat Nov 15, 2014 7:54 am

NIce piece. Love the simple ones with great lines and flow.

Robert
Dance like nobody's watching!

lswatson
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NuVat by Evert

Post#40 » Sat Nov 15, 2014 7:59 am

Quote from Robert Howle on November 15, 2014, 14:54
NIce piece. Love the simple ones with great lines and flow.

Robert


Thank you. Its based on a differential geometry minimal surface model discovered by Herr Enneper in the mid-19th century.
I reworked the formula and edited in Rhino. Its one of seven minimal surface inspired models I'll be introducing in January.
I used to mill them using a 12 sided scenario using Desk Proto and my 4 axis mill. The B9 nails my math models effortlessly.
And more than one at a time for the sizes I sell.
Hope you NuVat is working for you.
L

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