Reify3D Forum

Casting resins!

I tried several different burning cycles and images below shows the best result so far I managed to get from casting resin directly.
This time I used 6 hours burning cycle recommended by Reifi, or Mark (Solus guru).There is some cherry resin prints and some emerald. Cherry looks like cast better then emerald. Some of the print have been done one B9 some on solus I own both.

I kept models under UV light for about 12 hours

Plasticast investment ratio 38/100 (using cimo vacum mixer)

I left investment to settle over night , without rubber base.

I use large Kiln named Argenta, no extra holes or other modifications. only the vents at the top.

6 hour burning cycle has been used.

Any suggestion for improving casting would be highly appreciated? The only thing in my mind I have is to keep curing model for longer. It would be interesting to know what is the average curing time you guy use when curing with simple nail curing unit? I'm thinking of getting now b9 curing unit, to reduce headaches. Does any of you have any feedback?

Thanks,

@Dovydas

Do u mean ur oven is http://argenta.pl/APE800,c,95,96.html...

let us know what timing & ramp u keeping.

I can tell you that trying to cast different resins in the same flasks at the same time will cause issues unless you are using a phosphate base investment. It would be nice to get a little more information on the work flow you are using for casting. When casting resins there are far more variables than with wax base products. normally when I see a rough surface like that it is due to not curing the pieces correcly. Or the investment wasn't mixed correctly.

yes I use Argenta oven (image attached).

burning cycle 1hour at 149C, 1.5hours at 427C, 3hours at 746C, and the 1hour down to casting temp. I ramp temperature at max speed Argenta oven can go 10C per minute average.

For mixing investment I use wacum mixer from CIMO (image attached) water ratio 38/100, investment plasticast. I leave mould to settle and dry over night in a room temp without a rubber base on.

Flask in a oven when burning, hole facing down.

Some of the models did cast okay, and that gives me impression that some of them just need more curing. Any feedback regards b9 curing unit ? if it works and can cut whole process by 1 day, I'm happy to spend 600euros.

I like my B9 cure box. Most rings take 10 min. I do 5 then flip 5

Round 2

This time models has been kept under uv 24 hours. Result looks better, but not great. I'm going to try now to cure models at Evnision otho flash curing unit at work, see if that gives the difference, if that will solve the problem then I could say it is definitely a curing issue.

cure them as you are doing then after curing Microwave them in distilled water for 2.5-3 minutes let cool then repeat two more times. Then dry and invest.

Seems like lack of proper curing for sure.

Hi,

i follow as Micron3D, then out score casting which comes out perfect....

https://www.youtube.com/watch?v=soAIrSs ... e=youtu.be

Results after curing in microwave as well as under UV lamp. Looks better, but not there yet. Any suggestions ?