Nice work Blind, but I've got a couple of further comments:
Blindhorizon wrote:Okay with the mold release, you spray the actual miniature before you pour the silicone to help get the master out of the split mold.
Mould release is not necessary on the master part (unless it was made of silicone itself). I've never applied it to any of my masters - the silicone simply doesn't stick to anything.
Blindhorizon wrote:With split molds, you attach the reservoir and sprue piece to the item. Attach it with a small dab of glue so when you bend the mold side to side the connection breaks and you can pull the sprue reservoir out. Then you use a razor to cut open the mold.
Just to clarify some terminology: the sprue and reservoir are pretty much the same thing. The term sprue can be used to refer to most of the non-model parts, but I prefer to delineate the small pieces that connect between the reservoir and part by referring to them as "gates".
Blindhorizon wrote:Then the tricky part is to cut open the mold using the hook xacto head, i hear this is standard. I myself thought oh i can do a straight exacto and i ended up damaging the detail on the inside of my molds. I've only made 3 split molds and they where all at the same time of super small items with overlapping details. I hated it, I will be doing a split mold for bigger items though the small parts turned me off.
I wouldn't call the hooked knife blade standard
- I'm personally yet to try it out and get results that are great using just a standard #11 blade. You just gotta be careful when you're cutting up near the master part but thus far I've not done any damage (after literally hundreds of moulds).
It is indeed to fit items of a similar size in one mould and if a model is composed of some really large and really small parts then you're better off keeping them in separate moulds. I do lots of crazily small parts like space ship turrets with no problem in the split moulds so I'm not sure why you had issues Blind. Want to share a pic?
lastspartacus wrote:That brings up a second question, as I would think that it would be very difficult to get mold release up in a split mold?
Not at all. You'll be surprised how flexible the silicone is! You use one hand to spread the mould open and the other to spray the release. Open the mould 90° and apply release to each side from a perpendicular direction.
Oh yeah I can make that....