Hey, let's chat about mold venting! It's super important to get it right, whether you're using 3D printing or CNC machining. Trust me, you don't want to end up with air bubbles messing up your mold.
Here's a tip: when designing mold vents, think about where the air is gonna flow, not just the plastic. And if your mold has any fancy bits like paddle tails or fins, flip it upside down! It'll help the air escape way easier.
So, my go-to venting strategy is to create a little offset all around the mold. It's like a mini escape route for the air. Just make sure the depth is right, depending on whether you're 3D printing or CNC machining.
Next up, let's add some extra venting channels to guide the air out. Just watch out for areas that might seal up too tight. Oh, and make sure the main vent is big enough to handle all that air rushing out.
One last thing: if you're working with a multi-cavity mold, keep each cavity's venting separate. You don't want air from one cavity sneaking into another. And hey, I've got a video with more mold-making tips if you're interested. Check it out!