09-04-2013, 03:32 PM
Goaly
either way I turn the pattern if I pour down the middle there will be a 4 inch free fall inside the mold because of the hub, and any way you look at doing it that way is wrong with this part.
I've given the thought of gating it in the middle with a horn gate and letting it fill from the bottom which will keep it from washing out any of the sand. I've also given thoughts turning the thing so that the outside is down and gating into the rim it three places. with some risers at the gates.
there's just so many damn ways to go at it, and not all of them are going to work. plus this thing is going to have to be poured cold in the 1200 degree range I would think.
I've been giving the up thru the bottom with a horn gate some really hard thoughts that way I only have one gate with one riser dead center over the part that will be doing the shrinking.
DA
either way I turn the pattern if I pour down the middle there will be a 4 inch free fall inside the mold because of the hub, and any way you look at doing it that way is wrong with this part.
I've given the thought of gating it in the middle with a horn gate and letting it fill from the bottom which will keep it from washing out any of the sand. I've also given thoughts turning the thing so that the outside is down and gating into the rim it three places. with some risers at the gates.
there's just so many damn ways to go at it, and not all of them are going to work. plus this thing is going to have to be poured cold in the 1200 degree range I would think.
I've been giving the up thru the bottom with a horn gate some really hard thoughts that way I only have one gate with one riser dead center over the part that will be doing the shrinking.
DA
dallen, proud to be a member of MetalworkingFun Forum since Apr 2012.
If life seems normal, your not going fast enough!
If life seems normal, your not going fast enough!