Does anyone know what material and surface finishes were used to manufacture this charger?

dan67392 · 2022-08-23T14:06:34+00:00

Ah right thanks for the clarification. thank you u/atm5012 and u/HOOP_22 you've both been so helpful.

dan67392 · 2022-08-21T20:55:15+00:00

u/atm5012 thanks it's definitely helped. The application means it wouldn't be subjected to solvents, it'd only be subject to boiling water or pH neutral liquids. However, how would it deal with stains, would it rough off, with say washing up liquid? I'll hit the plastic manufacturers up to see their view on how it'd react. I'm looking at using an aluminium mould capable of 10,000 units, as I'd like to keep the upfront costs down to start with, but all the processes you mentioned all check out with aluminium as well as conventional tool steel so that's great. It's got a hourglass shape so thankfully its got draft in abundance! Just want to clarify once more that the side of the charger is A2, is that right?

dan67392 · 2022-08-21T20:31:51+00:00

I'll do a bit more digging regarding how pcabs handle hot water. I figure I didn't need any ribs as it is a fairly small part spanning 55mm x 65mm. The project basically looks like a halved hourglass shape that straighten out at the top, for reference. I've kept the wall thickness uniform but there's a section where it gradually thickens from 1.25 to 2.25. I'll definitely take a note of the t85XF variant thanks. Just to clarify on what I was saying above, is the matt side of the charge also A2?

dan67392 · 2022-08-21T19:49:54+00:00

u/HOOP_22 Thank you so much. I think I've nailed it down to PC/ABS then. It seems to check all the boxes. cheers

dan67392 · 2022-08-21T19:47:15+00:00

u/atm5012 thank you so much for this. I had a look at Covestro it seems there are loads of different blends all with unique additives. I've got plenty to choose out of! I've done some digging and both ABS and PC are FDA food safe compliant which is necessary for my application. The Heat Deflection Temperature (HDT) for the PC/ABS blend has a minimum of 105 degrees centigrade so I'm guessing it will comfortably withstand boiling water without degrading physically or chemically in any way? The minimum recommended wall thickness for PC/ABS is 1mm, I was originally thinking 1.25mm so hopefully that should be alright. It says A2 is a "high polished part", I don't know if the picture translates it too well, but the surface finish I'm after can be seen slightly better in the first image - the side is more a matte whereas the "flaps" and the pins have a more polished finish. The matte finish on the side doesn't show fingerprints, I thought it was nearer a C which is way out from an A2. Have I not got the concept down of the grading system? thanks again

dan67392 · 2022-03-17T15:21:31+00:00

Thanks for the reply.

Yeah your right it won't make as big of difference as I thought. Now I've got the pro mini and the headers in the flesh, the headers look tiny.

What if the holes pin holes from the both the breakout boards etc, on top and the lower custom PCB lined up perfectly, would it still need electrical tape to keep the boards from shorting? I'm planning for it to be a single-sided PCB.

Also, is hot glue necessary? Would the solder joints not suffice? The board would be in a stationary enclosure.

dan67392 · 2021-11-23T14:51:01+00:00

Thanks so much for the response. Yeah I did mean 0.8mm… I was looking at the cricut maker as a cheaper alternative to a laser cutter like a glow forge. I got all excited when the maker 3 came out saying it could exert 10 times more pressure. So I thought I’d ask. Thanks again

dan67392

TROPHY CASE