Stack flasks
Posted: Fri Aug 12, 2011 3:10 pm
Flasks are the current Stumbling block for my work, Since I'm a welder by trade, I whipped these us. If you have never worked with stack flasks I will explain, they are especially designed for use with flatbacked parts. mostly plaques
Here is the drag ready for ramming. note that stack flasks have the pins pointing upwards from below
Here is the completed drag
Here you can see a cheek, you can use multiple cheeks. 4 being common. the only difference between the drag and the cheeks, is each cheek must have a sprue cut
Here is the drag and the lower cheek complete and on the deck
here is the cope ready to go on,
Here is the entire mold
I intended to make 4 sections, that is why there is no labeled cope, but I ran out of metal one piece shy
Here we have the resulting castings.
There was one neat thing that I did not think of, the heavy 1/4 inch steel flasks did not raise when being rammed, A problem I have alot, so I did not have to clamp the pattern to the flask while I rammed... Hope this helps a few of you out
Here is the drag ready for ramming. note that stack flasks have the pins pointing upwards from below
Here is the completed drag
Here you can see a cheek, you can use multiple cheeks. 4 being common. the only difference between the drag and the cheeks, is each cheek must have a sprue cut
Here is the drag and the lower cheek complete and on the deck
here is the cope ready to go on,
Here is the entire mold
I intended to make 4 sections, that is why there is no labeled cope, but I ran out of metal one piece shy
Here we have the resulting castings.
There was one neat thing that I did not think of, the heavy 1/4 inch steel flasks did not raise when being rammed, A problem I have alot, so I did not have to clamp the pattern to the flask while I rammed... Hope this helps a few of you out