Problem (NOT) solved when casting resin 3D printing designs.

by Allan Straton on May 8, 2014

Hi Friends and colleagues.

CAN ANYONE GIVE ME SOME ADVICE, AS TO ME THE RESIN PRINTERS ARE A WASTE OF TIME?

My email address is info@thehouseofstratton.co.nz

Any suggestions will be appreciated. “Apart from the hammer treatment.”

I posted the bottom post last month when I thought the problems with the envision resin printer had been solved but I am sorry to say it has not been solved when casting resin through the lost wax casting.

I have to add a note about resin casting with precious metals.

I have tried everything and it is still not satisfactory.

I thought the problem had been solved but it hasn’t.

Casting resin is difficult and only 50%  work out.

I have also tried resin patterns straight into VLT rubber and find that the rubber does not cure near the pattern. I have even extended the cure time of the resin and spray coated it in vegetable oil and dried it thoroughly but the rubber is not satisfactory.

MY ADVICE until I can cast resin for myself is that they are a waste of money and time for the jewellery industry. After what I have experienced I would never buy a resin printer for casting resin and I don’t think the manufacturers tell the truth.

I was advised to air blow the cans out before I pour the metal into the mould but that did not work. Maybe it would get rid of the residue if you only had one ring in the can but I cast 200 items at a time when I am casting with each pour. I am talking one to two kg pours at a time.

My recommendation is that you invest in a  3D  Wax printer for precious metal casting or get it printed by someone who has a 3D wax printer.

Allan

Hi
My name is Allan Stratton.

My web address is www.thehouseofstratton.co.nz

Today I would like to write about 3D resin printing and troubles experienced when casting precious metals.

I have always wondered why when I cast resin 3D printed designs, I have trouble with the castings them.

I have used the special investment.
I have used the special burn out cycle.
I have had to fry patterns under light for an hours to cure them.

Nothing seemed to work.

If you used normal investment the resin 3D pattern expands and seems to break the investment.

I gave the resin 3D pattern a long burnout cycle as specified. It seemed to leave soot in the investment mould which created holes in the castings. Porosity.

I experimented and placed some resin 3D patterns in a sealed controlled crucible and left it in the oven through a burnout cycle to see what happens and if residue was left there.

There was residue and it was a black and white mixture.

I found that everyone had this problem in NZ so a friend of mine with an evision tech resin 3D printer rang a scientist from envision in Germany.

1 ” Have you got the burnout bible”.
That was the first time we had heard of that so He emailed the recipe book.

2 ” Spray the 3D patterns with acrylic paint before you place the items in investment. Make sure you dry them before you invest.

Nobody tells you this when you buy the machines.
Just like magic.

The items didn’t break the investment.

You don’t have to use special investment.
There is no porosity.
The grain on the casting is fine.
The surface is beautiful.
Problem solved.

Why do people not supply all the facts when you purchase these 3D resin printing machines.

Until next time.

Happy casting.

Allan

 

Comments on this entry are closed.

Previous post:

Next post:

WordPress Admin