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#31
Re: Colored Molded Cases
Posted on: 4/3 2:39
PVB Elite
Joined 2003/7/26
USA
1471 Posts
PVBCC EntryCoderContributorSpecial AchievementTop10 PosterHOTY09 EntryLong Time User (15 Years) App Coder20+ Game RatingsPVBCC 2013 Entry
I'm not familiar with the particular machine you're using, but maybe the fill issues could be mitigated by pre-heating the mold. It would slow down the cycle, as you'd have to wait longer before demolding, and then again to reheat it, but if it lets you use the material you want and get good results, maybe it's worth a try.
Perhaps you could semi-automate it by using Peltier-effect devices to both heat and cool the mold more rapidly.
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#32
Re: Colored Molded Cases
Posted on: 4/3 4:44
VUE(xpert)
Joined 2016/12/15
USA
483 Posts
Long Time User (3 Years)
Quote:

RunnerPack wrote:
I'm not familiar with the particular machine you're using, but maybe the fill issues could be mitigated by pre-heating the mold. It would slow down the cycle, as you'd have to wait longer before demolding, and then again to reheat it, but if it lets you use the material you want and get good results, maybe it's worth a try.
Perhaps you could semi-automate it by using Peltier-effect devices to both heat and cool the mold more rapidly.


Good idea. We’re preheating the mind now. Better results but still not sufficient. We’ve even went so high that it burns the material. The machine doesn’t push the material out fast enough for the thin case walls.
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#33
Re: Colored Molded Cases
Posted on: 4/3 4:44
VUE(xpert)
Joined 2016/12/15
USA
483 Posts
Long Time User (3 Years)
Quote:

RunnerPack wrote:
I'm not familiar with the particular machine you're using, but maybe the fill issues could be mitigated by pre-heating the mold. It would slow down the cycle, as you'd have to wait longer before demolding, and then again to reheat it, but if it lets you use the material you want and get good results, maybe it's worth a try.
Perhaps you could semi-automate it by using Peltier-effect devices to both heat and cool the mold more rapidly.


Good idea. We’re preheating the mold now. Better results but still not sufficient. We’ve even went so high that it burns the material. The machine doesn’t push the material out fast enough for the thin case walls.
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#34
Re: Colored Molded Cases
Posted on: 4/22 21:30
VUE(xpert)
Joined 2016/12/15
USA
483 Posts
Long Time User (3 Years)
Latest and greatest. These are not as stiff as the original cases but the semi transparent look is killer. I think these would be usable despite being more flexible. Definitely better than the 3D printed versions.

Mockup shown in the images with my 16Mbit and 32Mbit PCBs. Top cover only.

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#35
Re: Colored Molded Cases
Posted on: 4/24 8:35
VB Gamer
Joined 2018/12/13
Canada
20 Posts
Long Time User (1 Year)
That looks awesome!
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#36
Re: Colored Molded Cases
Posted on: 5/13 21:09
VUE(xpert)
Joined 2016/12/15
USA
483 Posts
Long Time User (3 Years)
OK, got cleaner edges on the latest clear sample parts. These are usable.

Now to find the funding to have the back side mold made.
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#37
Re: Colored Molded Cases
Posted on: 5/13 23:26
Virtual Freak
Joined 2019/7/21
Sweden
61 Posts
Damn, that looks sick!
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#38
Re: Colored Molded Cases
Posted on: 5/27 21:52
VUE(xpert)
Joined 2016/12/15
USA
483 Posts
Long Time User (3 Years)
Milled FR4 cart cases. I had a few prototypes made. It's a shame the milled edges don't have a clean black color. But these are cheap to have made. These are pictures the supplier sent me. They're being shipped to me now. Maybe they could be airbrushed or something like that...

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#39
Re: Colored Molded Cases
Posted on: 6/7 2:35
VUE(xpert)
Joined 2016/12/15
USA
483 Posts
Long Time User (3 Years)
Cross posting here as well. I put these up on the Discord channel. FR4 cases. Rock solid. Too bad the vendor decided to not follow the model and its slightly too large. I'll be having these remade. However, I really like them. I blacken the edges (not shown) and they're even cleaner. I think I'll use them for reprogrammable cart cases.

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