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  1. ToolEng1

    Any does and don'ts when it comes to overmoulding on aluminium sheet?

    Chemical bond during the moulding process. I'm not too sure how PC-ABS bonds to aluminium especially a smooth surface. But there is scope to change the part design to some sort of mechanical fixing i.e. rolled edge etc. The parts are 3D, not very complicated. The plan to hold the insert in place...
  2. ToolEng1

    Plastic Mold Approval Checklist

    I agree with toolman. But I must say that these design check lists are put together by people who have a lot of experience and should be used a guide only. Every part is different and this may require new specifications to be written. I have been a tooling engineer and processing engineer for...
  3. ToolEng1

    Light Pipe Principles

    The lighting industry is very secretive, you are right! I should know as I work in one. I can't give you any details because of confidentiality reasons. You need to send a file of your proposal to a tool maker such as DBM Reflex in Canada or INCOS Italy. Approch them as if you need a tool quote...
  4. ToolEng1

    direct gate maintenance

    This issue is seen if hot runner temp is too high or as you say if the tip/valve is damaged. Depending on the type of PC melt temp should be around 290ºc. Generally if the process is set correctly, even if the valve gate shut off is damaged you should not get stringing. I suggest you contact...
  5. ToolEng1

    date code insert

    Try http://www.dtmcumsa.com/ they go down to Ø4mm
  6. ToolEng1

    Any does and don'ts when it comes to overmoulding on aluminium sheet?

    I've had a RFQ in from a customer to manufacture a 1+1 injection mould tool to overmould on to an 1mm aluminium veneer trim that fits onto an instrument panel. The substrate is in >PC-ABS<. This part is highly visual once assembled so scratches, blemishes etc are not acceptable!! I know there...

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