MetalworkingFun Forum

Hi
Lads
I made use of the sand cores i made last week and cast my cylinder

This picture shows the sand core in the mould

The small round bit is where the metal is poured in (sprue) the rectangulsr bit is the riser
This feeds the casting as it cools





This shows where the riser has been cut off (nice clean solid metal)
This is always a welcome sight

Very happy with it

I cast this yesterday with poor results

Nasty void in the riser (scrap casting)
At least you can always cut it up and re melt it

I could not resist machining at least one face
Good clean metal



John

John,
Excellent job mate

I'm glad you explained the difference between the sprue and the riser 'cause I'd be temped to pour the metal in the "big hole"

Any idea why it looks "silvery" on the outside?

Great bit of casting, don't suppose you did a video

DaveH

(08-12-2012, 03:48 PM)DaveH Wrote: [ -> ]John,
Excellent job mate

I'm glad you explained the difference between the sprue and the riser 'cause I'd be temped to pour the metal in the "big hole"

Any idea why it looks "silvery" on the outside?

Great bit of casting, don't suppose you did a video

DaveH

Buisy with the video now

(08-12-2012, 03:51 PM)doubleboost Wrote: [ -> ]Buisy with the video now

Ooo

DaveH

Excellent job as always John. Looking forward to the video

well dun john brill bit of work

Incredible. Not something you find going on in most back yards these days. Very impressive John.

What's next? Mining your own ore as well? Don't start slacking now!

Nice work John. It's been a long time since I've had the fun of machining a casting.

I assume by the blackening around the casting, that you use an oil tempered sand? Is it your own recipe or do you buy it already mulled. And what about flux? I know chlorine type degassers are used for aluminum, but do you also use some sort of flux for the bronze?

Tom

(08-13-2012, 07:16 AM)Highpower Wrote: [ -> ]Incredible. Not something you find going on in most back yards these days. Very impressive John.

What's next? Mining your own ore as well? Don't start slacking now!

http://madmodder.net/index.php/topic,316...l#msg33953
John

(08-13-2012, 10:54 AM)doubleboost Wrote: [ -> ]http://madmodder.net/index.php/topic,316...l#msg33953
John

I should have known...