Electrolysis - Rust Removal Method

This post is not really related to metal casting it's just informative and interesting. I made this video showing a method of de-rusting. It is effective, cheap and every one can try this at home.
In the images below you can see the the results of this process and how efficient it is.
You can also see the electrolysis bucket that I made, I welded bolts to rebars using them as the sacrificial anodes and plywood as a base plate.

The next two images is the electrolysis de-rusting in action!

This images are the before and after using the electrolysis rust removal method.
bringing some rusty objects back to life.

This is the video I made showing how to preform the electrolysis rust removal from a-z.
Enjoy ;-)

Casting a new foundry flask (Part II)

Yesterday I casted the second pattern of my new aluminum foundry flask. The first attempt of the sand moulding failed. I had to improve the angle/draft around the patterns handle section. After using more filler, sanding it and then finishing with a coat of varnish.
The angle filler adjustment did the job and the sand mould second attempt was very good. I used again my homemade green sand and the aluminum casting was satisfactory.

Sand casting new foundry flask (Part I)

This is a new video I made showing the sand moulding process of my future foundry flask. In the video I made you will see the first part of the aluminum flask. I have 7 more parts to cast before it's ready for use.
This casting was made using my homemade green sand. No need for very fine casting details it's just a sand box after all ;-)
This is my sketchup design:

I made two patterns for each side of the flask, so the drag part is just a mirror image of the cope. The third pattern is my FlamingFurnace plaque name and flask size.
I made it optional to make the sand mould impression with or without it.



In the next image you can a correction I made to the gating system for the sprue, riser. This small change from the gating system I have in the video will prevent porosity.