My first casting

[jef-lemmens]

Because I wanted to build the Nova 4,5cc diesel engine , I had to cast the crankcase and cilinderhead , after some reading and to have viewed some movies on youtube I started on my first casting , and I find it pretty good

 

[vederstein]

Did you make forms, lost wax, or lost foam?

 

[///]

Nice work. I'd also be interested in more details.

Years ago I built a large furnace with the view of casting parts for a Gingery lathe, however I only cast one part before I was gifted a Sieg C3.
It has since sat unused for the last 15 or so years, but I 'm now considering dragging it out to cast some flywheels... If I still have the muscle to move it.

 

[jef-lemmens]

Thanks guys , I will be post a series of photos of the procedure , if you still have any questions please let me know , and I will try to answer them .
It all starts with making the mold ...... This mold is made in one piece and is not separable .

 

[jef-lemmens]

After making the mold I have an additional wooden plate made to separate the mold in two parts in the molding sand .
The sand is oil-based , I think it's called Petro-Bond in English .
For the aluminium I use old pistons .
To separate the two parts from each other I use baby talcum powder

 

[jef-lemmens]

More pictures of my first attempt

 

[jef-lemmens]

Meanwhile , I have also cast crackcase's for the Mills 1.3 , this mold is from two separate parts .

 

[vederstein]

After making the mold I have an additional wooden plate made to separate the mold in two parts in the molding sand .

From the pictures I think I understand how you did it. Yet I still have a question. Did you have stop blocks or some device to ensure the pattern didn't protrude too far though the wooden plate?

I'm having a bit of a time understanding how you ensure your final casting was round and not oblong.

(Sorry to be a pest, but if I get a bonus this year from my company, I plan on getting into casting. So I'm trying to learn what I can.)

Thanks,

...Ved.

 

[kadora]

I use similar red sand for casting its trade name is PROCAST A .
This sand is specially designed for aluminium i love this stuff .

http://giessereiartikel.de/shop/index.php?cPath=1_8

BTW what kind of paint do you use for patern painting ?

 

[dnalot]

Hi

Good job, very nice parts. Love the finish you get with new sand. With use the sand will turn black and the finnish will not be nearly as good. I use oil based sand and mine is now several years old. I think the clays get burned out with use. I have found that warm sand sticks together better and gives a much better finish. Show us your furnace.

Mark T

 

[jef-lemmens]

From the pictures I think I understand how you did it. Yet I still have a question. Did you have stop blocks or some device to ensure the pattern didn't protrude too far though the wooden plate?

I'm having a bit of a time understanding how you ensure your final casting was round and not oblong.

(Sorry to be a pest, but if I get a bonus this year from my company, I plan on getting into casting. So I'm trying to learn what I can.)

Thanks,

...Ved.

Absolutely no problem to answer your question, see attached drawing/picture, maybe it's obviously so, and otherwise ask again .

Regards Jef

 

[jef-lemmens]

BTW what kind of paint do you use for patern painting ?

MOTIP car paint from a spray can

Regards Jef

 

[jef-lemmens]

Good job, very nice parts.Show us your furnace. Mark T

Thanks Mark , I still have no furnace, I use a stainless steel pot and an oxygen-acetylene burner , but the intention is there to build one in the future .

Regards Jef

 

[///]

Thanks for the extra info.
I had a feeling you were using oil bonded sand.
I also have oil bonded, but a DIY variety called K-Bond, as Petrobond is not available over here (that I have found)
Cheers!
http://www.foundry.ray-vin.com/k-bond/k-bond.htm