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  1. sizzer33

    Alternative to ASA

    Its a new part so the mould is not build yet. Our resin agent did suggest PA66. I read somewhere of some rubber treated PA66 or something, anyone used this before?
  2. sizzer33

    Alternative to ASA

    I did think of PC but the part will be covered in oil though. What's the maker and name of the UV stabilised PC you're mentioning.
  3. sizzer33

    Alternative to ASA

    Hi all, Just would like to get some advise on any good alternative resin for ASA. The part is used in conveyor rollers, its just a plug we stick on both sides, apply some grease to prevent dust and water going in. We want to find something besides ASA due to cost and also the availability...
  4. sizzer33

    PMMA cube manufacturing

    Thanks Patprimmer. I guess we'd have to weigh in the pros and cons of injection moulding process & casting to see which are cheap and more efficient. Possibly will need to look for some casting suppliers. From your experience in cell casting, could you advise typically how many cavity moulds...
  5. sizzer33

    PMMA cube manufacturing

    Thanks for your suggestions. There will possibly be other shapes like half circle and cylinder shape. I'm actually wondering how some of these jewellers make the acrylic jewels because i'm thinking we would need suppliers like that. So from your suggestions given, machining from PMMA stock...
  6. sizzer33

    PMMA cube manufacturing

    Hi, I would like to find out what is the most economical way to manufacture PMMA cubes with dimension of 25X25X25(mm). It will need light texture on the surface. Material to be used is Plexiglass PMMA 8N. I've only experience in injection molding and see that the part is not really feasible for...
  7. sizzer33

    Bonding PMMA with NCVM layer onto PC/ABS material

    Hi everyone, Any help would be good, please see below Part description: Top PArt: - length 30mm X width 18mm X thickness 1mm - adhesive surface is flat, but the part is slightly curved like a banana. - coreside of part is put through NCVM. NCVM material would be Sn. - PMMA Bottom part: -...
  8. sizzer33

    i-phone's glossy shell

    Hi , For Piano black material, check out with Sabic. They should know the type of piano black you're talking about. ITs a PC material by the way. We got a couple of parts in production here with "Piano Black" resin. regards, Ken Chong
  9. sizzer33

    i-phone's glossy shell

    Hi, MY guess is high gloss black PC/ABS or PMMA. Mould have to be polish real well. The part will then be sprayed with a top coat UV paint to get the piano black effect.
  10. sizzer33

    Two-shot, Co-Injection, or In-Mold Decorating?

    Hi, IMD would be a good choice but it depends on your part design. If you have lots of curves and radius, IMD would be difficult. Also an IMD tool would be a bit costly as you'd probably get the tool from the IMD foil supplier who has experience in making these IMD tool. If you're thinking on...
  11. sizzer33

    IML problem

    One question to txrt. Regarding the adhesive properties of foil and plastic part, doesn't the adhesion between these 2 properties created by an adhesion layer on the IML foil instead of the type of foil material?
  12. sizzer33

    S136 Assab steel sand spot issue

    the material is from Assab,its called Stavax ESR S136 steel. By the way, we re-EDM and repolish the surface about 0.02mm altogether and the spots are gone. Apparently its an over-polish issue and not pitting corrosion as we first thought. We're also going to coat this surface to avoid further...
  13. sizzer33

    S136 Assab steel sand spot issue

    Hi all, We've been experiencing some issues on S136 steel for the past few projects. We have had sand spots(sand like pot holes) on polished surface of S136 steel. The steel were hardened to HRC50. WE're in China and the steel are purchased from dealer in China with cert and everything. So with...
  14. sizzer33

    IML problem

    Cheers everyone!! It at least help us to determine which direction to go now. Thanks
  15. sizzer33

    IML problem

    Well in our plant, the tester do spray some mould release when they start the machine to avoid part from sticking. The part comes out ok after a few shots. Just wondering if anyone had any problem with their IML foil when they spray mould release agent during moulding. My problem is one the...
  16. sizzer33

    IML problem

    Hi all, Just wondering if anyone can point me to the right direction in solving this IML issue. Here are the info:- - IML foil is PET 0.75mm - Part to be IML is PC material. - Mould temp during test, 45-55degC - Part is a mobile phone front window. It is a rectangular part with only slight...
  17. sizzer33

    How would you make this simple part?

    Hi, from your comment, "I meant that the material needs to be rigid and strong in the final product. The plastic is an encapsulation for some sensitive electronics. It needs to be aesthetically pleasing, and resistant to deformation. Since its thin, it also shouldn't gouge easily." If the wall...
  18. sizzer33

    Injected TPU abrasion resistance

    Hi , This is really a good read. Its always a challenge to find out discrete problem with your parts. Seems like you're doing a very good job analyzing it. Situations like this happened to me alot, where suppliers come over to help and it all went ok and by the time they leave, it all goes...
  19. sizzer33

    Delamination caused by shear heat

    Hi, The exploded area in the picture (the one facing towards us), is that the gate? Did anyone do something to it, cause it look exploded. At 440F coming out, and with 4inch diameter gate, i don't think the material would shear that easily. Hotrunner tip may be overflowing but i'm thinkign...
  20. sizzer33

    UV blocking resin

    Hi , What type of liquid is the bottle suppose to hold?

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