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This is a good list. Let me add one to it. I manufacture products in China and I consistently see new designs for injection molded parts where the designer has
by bobjordan 10y ago
This is a good list. Let me add one to it. I manufacture products in China and I consistently see new designs for injection molded parts where the designer has unrealistic expectations for the tolerances that can be achieved on molded parts. While the tolerance we can achieve will change proportionally with the size of the injection molded part, don't design parts that rely on precisions of 0.01mm. Hard to do this unless you are Apple.
- louprado 10y agoScott Miller of the Bolt team has a great video on injection molding. Design for Manufacturing Course 5: Injection Molding - DragonInnovation.com https://www.youtube.com/watch?v=jx5_gO9LTf8 https://www.youtube.com/watch?v=jx5_gO9LTf8 After watching it I decided to use commodity enclosures with custom milling and avoid injection molding for now.
- theroot 10y agoThis video https://www.youtube.com/watch?v=RMjtmsr3CqA https://www.youtube.com/watch?v=RMjtmsr3CqA was a series of revelations as to how injection molding works.
- Klinky 10y agoAnother interesting resource is "Guerrilla guide to CNC machining, mold making, and resin casting" @ http://lcamtuf.coredump.cx/gcnc/ http://lcamtuf.coredump.cx/gcnc/ How did you find your commodity enclosures? It seems like there are a lot of random manufacturers out there making ugly enclosures.
- louprado 10y agoI prefer Takachi enclosure. Some of their plastic is translucent so your LEDs will shine through the enclosure. You can see an example here: https://hackaday.io/project/6357/gallery#67d3556e38f0b46c486510fcf0848ae5 https://hackaday.io/project/6357/gallery#67d3556e38f0b46c486...
- Dwolb 10y agoHey - this is a long shot, but hoping to connect over possibly moving PCB fabrication, assembly, and test over to Asia from the US. Let me know if it'd be Ok to chat. If not, that's cool too.
- Klinky 10y agoHis contact info is in his profile. Hopefully you were planning to pay for his consulting services. Moving fabrication and supply chain to another country doesn't sound like something solved with a brief chat.
- Dwolb 10y agoThanks for the heads up on the contact info.
- kweks 10y agoHey - we've been performing PCBA in China for our own commerical project and some open source projects for a few years. Outside of that, have been working in traditional manufacturing in China for many years. Feel free to reach out, I'd be happy to help or point you in a direction. logistics(a)parklink.asia (apologies for the non personal email address, don't want to put my personal on the public forum)
- nameisu 10y agoI am fresh out of college. I work for a very big OEM and make drawings for plastic parts. i have no clue of the tolerances which suppliers are capable of holding. how does one learn that? I usually tolerance based on our objectives and source a supplier who says yes.
- dammitcoetzee 10y agoYou call the supplier, tell them you know nothing, and ask them to help you understand what they're capable of. You should find a mentor, this is the kind of retroactively obvious advice I got from mine.
- afarrell 10y agoWhere does one find a mentor?
- hengheng 10y agoNo more than two doors away.
- dammitcoetzee 10y agoFind the guy whose work you like the most at your company and bother him all the time. Most good technical people love to help, to be asked questions, and ultimately to be valued for the experience they've worked hard to get. In the end mentorship is something that you seek out and get for yourself. It's rare that someone will actually attach the title mentor to a such a relationship.
- 8note 10y agoany time you make something, you find that out from the people that will make it. usually they can also improve your designs to make then cheaper to produce as well. ... I thought that was standard teachings in mechanical engineering?