News about building area, resin, curing time...

Hi Guys, few updates:

1) Building area

• I am still facing a lot of problems to find the right material for the bottom building area, so far I have tested glass (result: don't work as the resin stick to it), acrylic (result: resin stick to it as well) and polycarbonate (Result: resin does not stick but after some minutes the polycarbonate become opaque because of some chemical reaction and does not work anymore.
• The plan is to test some other materials within next 2 weeks.

2) Resin and curing time

• The resin works very well after adding some dyes and this solve completely the issue of curing more than the required layer. I manage to print a small object with amazing quality and no "shadow" on other layers.
• Now I am using 8 seconds for curing time and I am getting a amazing result.

Cheers,

Jr

New tests and new findings...

Hi Guys,

I was wrong, the curing time was not enough to cure the resin totally, the resin was yellow because was not cured. I put it for few hours in the sun and became crystal clear, and got very hard.

The problem now is that increasing the curing time also increased the stickiness, so the acrylic base does not work... I need to find another material for this.

Meanwhile I will finish some other parts of the printer that are still pending. The program is 95% ready and it's amazing. I will share it later on.

Another important thing, the resin is clear and the light pass through and cures more than the layer it suppose to cure... so, there is no way we will produce a crystal clear object... but I am fine with that...

Also I am checking with Dymax if they can provide the resin with color.

Regards,

Junior

First findings..... while printing... Now I will go out for a drink :)

1) I used curing time = 4 seconds, I think it was too much, the resin got too strong and start to stick on the acrylic. It became because of the over curing.

2) You need to wait few seconds after curing one layer so the resin can settle better and avoid bubbles

3) You need enough resin to cover at least the Tilt area. As it was my first test I used just 90ml of resin (economy mode.. hahahaha). It was big mistake, the bubbles start to appear and once they became big part of the layer the object broke because of the lack of the strength combined with over curing.

4) After finished...don't wash anything with detergent or soap... store the remaining resin in a anti-light recipient and leave the remaining one on the tank. Use the light to cure all the remaining resin in the thank, so you can remove it easily.

5) My thank is made by acrylic... works pretty fine and VERY cheap... comparing to the quartz I bought before (didn't work with quartz).

Many things that I will right later... but the method works and the resin is good for that.

Cheers,

Jr

IT WORKS!!!!! :)

Hi Guys,

INCREDIBLE!!!!!! I have just printed my first object on the 3d printer... still many things to adjust but the process works very well!!!

Please see the pictures.

Cheers,

Junior

Work in progress

Hi Guys,

Just want to put some new pictures of the work I am doing... I will explain later on how everything works.

Cheers,

Junior