Test of Blue-Cast: compatible and castable resin

[Louis9999]

Can you explain what ‘gypsum’ is ?!

[katkramer]

When they say “gypsum,” I believe that’s how they refer to investment.

[katkramer]

I’m using the Neutec large wax sprue system, so I do steam dewax before putting into the kiln.

@rclaborne, have you tried the boric acid addition with any other investment? Do you know what it does specifically? How long are you burning out at that temperature? I’m guessing it’s pretty clean?

[katkramer]

Looking at Low Shrinkage and wanted to know what the optimal method to cure is. I generally have my prints into casting process in less than 18 hours

For Low Shrinkage are people using V2 Castable or V3 Gray? Also I have quite a few empty V2 Castable Cartridges that I can use in order to have the heating element going?

Heating the resin required … ambient temp is normally about 24-26 C

thanks for any advice … getting some porosity with V2 Castable … especially with platinum so exploring other options

Also is one able to do stone in place casting with this resin?

I don’t think anyone ever replied to this one…
I haven’t used the low-shrinkage yet, but the beauty of BlueCast is not having to cure. They list specifics of washing the prints under running IPA, but I just wash as usual in my Formlabs wash station and it works fine. I dry them, then invest. I’m actually guilty of using my hair dryer to speed things up, but if I have time I let them air dry. I live in a humid climate, so air dry sometimes takes awhile.

I have not used BlueCast in other cartridges. I filter it back into the BlueCast bottle if I’m not printing within a day or two. Castable resins are VERY caustic and will cause your tray to degrade more quickly. I recommend not leaving any castable resin on the printer. I have had a tray fail on my printer…printer was okay, but cleanup was not fun!

I use a baby bottle warmer to warm the BlueCast resin before printing. Since I always filter the resin back into the bottle, I take the 1/2 liter bottle and put it in a Philips Avent bottle warmer, which has a setting that is the same as the recommended temperature for BlueCast. Then pour it into the tray.

I have not heard of anyone doing the cast-in-place stones in resin, with the thought being that the temperature for burnout is much higher than the lower temperature used for cast-in-place. I found this discussion on the B9 site. https://www.b9c.com/forum/viewtopic.php?t=1985

[Danhtran]

Hi Everyone.
DO you show me the reason why product after casting is not good( use resin Bluecast Original.

.
Thanks

[BlueCat]

Hi, as far as I can see sprues are in wrong place, for such big rings best is to have one pillar passing trough ring stem and becoming like a tree with at least 5/6 connections to downside of main face. Please browse images here to understand https://www.facebook.com/BlueCast3d/

[rclaborne]

@rclaborne, have you tried the boric acid addition with any other investment? Do you know what it does specifically? How long are you burning out at that temperature? I’m guessing it’s pretty clean?

I’ve tried it with R&R Ultravest and some others. It does the same thing each time… Makes the investment harder and more resistant to resin expansion. It also increases the temp you can go up to before the material starts to break down. Generally I am holding the high temp for 4 to 5 hours depending on what’s in the can. Naturally I’m speaking of FL Castable V2. I would try BlueCast but too many issues with shrinkage.

[delnico]

Hi, your spray solution seems important, i cast some pieces recently, all is globaly ok except some holes as you can see on wolf nose on the link behind… I don’t know much about consequences of waxit on investment but do you think it can fixe this little holes (porosity) pbls ? And when to spray model with ? (before deliver model to caster or it’s better to put it on cast tree, just before going to hoven ?)
Thank you much Chris !

[Chris_Estelow]

@RickyMcG - Could you please share the file for the skull ring? I want to make a pen holder out of it.

Chris

[BlueCat]

You can give a try to BlueCast LS (low shrinkage)

[rclaborne]

This requirement to immediately cast after printing is not something my workflow can tolerate.

[Ugnele]

I’ve bought Daylight Castable resin. Here’s my best print with Castable V2 0.025 settings.
I can’t get any further print after this point.
Printing with Grey resin settings was even worse.

What can I try next? Can someone advice what to do?

[fantasy2]

Daylight castable? The one from photocentric3D? That’s not suitable for the Form2.

[Ugnele]

Are you sure? I bought this according recommendation that it is suitable.

[fantasy2]

Interesting… Daylight resin is formulated to be highly reactive.

They sell a UV castable resin specially designed for the form2:
https://photocentricgroup.com/uv-laser-resin/#CASTABLE

[katkramer]

Hey @rclaborne! Did you ever mention how much boric acid to add to the investment? Is there a ratio?

[rclaborne]

Start with 1.5% of water weight. Increase to 2% if not hard enough.

[Ugnele]

Does anyone have burnout cycle for Bluecast X10? Is it the same as original?

[marto74]

For X10 you can butnout just like Wax, just use the burnout recomended by your investment.
I do even shock burnout with phosfate bonded investment, invest and after 20 minutes just put the flask in preheated oven at 900 deg C , hold for 1 hour and cast. This is for CrCo alloy casting

[raylpz88]

Hi, 3d_garage
What casting machine do you use to cast this?