11-16-2014, 07:22 PM
Another point in pattern making. Most of the time I've tried to make a match plate, in other words half of the pattern on one side and half on the other making sure the draft is correct. This way you'll have half of the casting in the cope and the other half in the drag. One can even include the gating system, except for the sprue and riser, in the match plates. The main advantage in this is having the same amount of sand above and below the casting making cooling fairly symmetrical.
Match plates will also improve efficiency and reduce time, if, and that's a big if, you make enough of the castings. Depending on the complexity of the pattern I usually will not make a match plate unless there is at least a dozen pours. Since a flywheel is fairly simple I would seriously consider a match plate if there are as few as six pours planned.
Match plates will also improve efficiency and reduce time, if, and that's a big if, you make enough of the castings. Depending on the complexity of the pattern I usually will not make a match plate unless there is at least a dozen pours. Since a flywheel is fairly simple I would seriously consider a match plate if there are as few as six pours planned.