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Make a plastic phone cover using CNC milling

This topic contains 70 replies, has 21 voices, and was last updated by  Manuel Maeder 6 months ago.

6
Jerry de Vos jerzeek

Make a plastic phone cover using CNC milling

11/11/2017 at 21:32

Hi Guys,
I made an instuction video on how to make this, and in this thread i want to reply on questions that you guys might have!
😀

Why not design the injection point on the inside of the phone cover? – by @jegor-m
This is cause the inside has an insert to mold around, and in general you want to prevent injecting through inserts.

Where does the air go
Yes on big injection machines this is a problem, but here the tolerances are not so thight, one scratch and you will have plenty of ventilation…

What material did you use?
The mold is made out of Aluminum

How much did the mold cost?
We paid €400 for the mold, €50 for shipping

Software?
I used Solidworks mainly because i know the program very well and the iPhone can have difficult radii. you can easily use fusion360, thinkercat or any other (free) program, but im still learning those 😉

Where to find the mould files?
Mold files are in the download pack:https://github.com/hakkens/precious-plastic-kit/archive/master.zip
In this path:   5.create -> iPhone 7-8 mould -> STEP files 😃

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new
17/11/2018 at 06:23
1

I was wondering, what is the radius of the holes that you made for the screws?
Also what is the radius for the injections cutout in the mold that you pour the molten plastic into it?

new
19/11/2018 at 18:43
1

what series of alumunium you use?

warrior
19/11/2018 at 18:51
0

@gabrielsitumorang
6061-T6 to be precise,
but I dont think it matters much. 😉

starter
14/12/2018 at 09:54
1

Hi,
Can anyone here tell me what calculations are to be done to decide the thickness of the mould for compression moulding. We are using cartridge heaters.

Thank you.

warrior
18/12/2018 at 16:17
1

@csejal
Thanks for your interest, you are making a compression machine with band heaters?
The thickness was mostly through trial and error, thicker is always easier.

Greetz, Jerry

helper
19/12/2018 at 02:02
1

Hello @csejal
according to my tests doesn’t matter the thickness of the mould at compression machine because all the mould reach high temperature..
only at injection machine you need specific thickness  cause the mould is cold

the thickness depent from:
-the size of the mould
-from the type of plastic
-the force of the injection

*maybe this question is not for this topic

helper
08/04/2019 at 08:35
4

Hello evreybody!

I have make a few modifications to the mould!

Now the injection hole is at oposite side that means the case is clean and the injection sign is inside the case

Attachments:
warrior
08/04/2019 at 08:45
2

@stampro01
WOW WOW WOW
!!These look absolutely gorgeous!!
How do you get the case of the mould?

Great work man!

helper
08/04/2019 at 09:29
3

Thank you very much @jerzeek

here is totally raw video  with that mould

https://we.tl/t-AxzlBpquHU

starter
09/04/2019 at 07:15
2

WOOOOW,

they look great.
I see myself getting jealous, cause you dont have to stamp them 😀

also nice logo milled in the mould:)

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