I used POP for a lot of molds initially and poured a lot of lures out of POP molds. Much of the results however are dependent up on t he guy/gal making the mold.įor the average DIY guy I think POP is about the cheapest, easiest to source material that will give very good results. Making a mold isn't hard to do just takes a little patience and thought. Now, if your items are hard plastic, resin lures, lead, etc., then the suggestions above may change some, but I am not a big fan of it, but it should not be discounted. It is old school, but in many cases, it is all that is available to a lot of our international lure makers. It is inexpensive, but fragile, takes special treatment to seal it so the results are smooth, and I find it is not very durable. You can get a more durable and extremely stiff mold if you make it out of VacMaster 50 which "contains over 50% aluminum". So, for a firm mold, Silicone like Alumilite Plat 55 is a great option. In fact, a stiffer mold is preferable if you are going to inject. But, because you are using soft plastic, you can still use a stiff mold in many cases. Silicone is a great option for this, and Alumilite HS2 or HS3 are good options to consider. If your items have lots of undercuts, then a flexible mold is best. If your items to be made are plastic, soft plastic, and I assume that it is because of the forum you posted in, then it all comes down to undercuts. The answer to that question unfortunately is - it depends.
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