|
|
Forums - News / General |
For General modelling or hobby-related topics that are not covered by any other specific forum. Please keep to topics concerning the hobby. |
| Topics | 3037 |
| Messages | 22932 |
|
|
| Subject: | Re: Model manufacturing question - mould degradation |  |
| Date: | Jul 12, 2006 |
| From: | michael kenny | |
Sink, flash and shorts effect all moulding operations and the only way to eliminate them is to have a quality control system that scraps the defective parts.
For even the most basic automotive part you always have some form of problem and there are stringent standards as to how many defective parts a supplier will accept from a moulding firm. The number of defects is counted in parts per million (PPM) Yes that is parts per MILLION, say 10 or 20!
The current standards are aimed at ZERO defects so I think any kit manufacturer who allows defective parts into the box clearly has far lower quality standards than the firm who make the simple lever that allows you to move your car seat back and forward.
The only reason you get flash is because the moulder is too greedy to scrap the parts that have the flash. Even if the tool was worn and had a problem with flash you could run the tool at a lower specification and accept some shorts that would be reground. It seems these firms are packing everything. |
| |
|
|
 | Model manufacturing question - mould degradation - Bill Goodrich - Jul 12, 2006 |
| . . . Re: Model manufacturing question - mould degradation - Gerald Owens - Jul 12, 2006 |
| . . . . . . Re: Model manufacturing question - mould degradation - Christopher C. Tew - Jul 12, 2006 |
| . . . . . . . . . Re: Model manufacturing question - mould degradation - michael kenny - Jul 12, 2006 |
| . . . . . . . . . . . . Re: Model manufacturing question - mould degradation - John Barnicoat - Jul 12, 2006 |
| . . . . . . . . . . . . . . . I've only seen one kit that badly done. - Hans haase - Jul 12, 2006 |
| . . . . . . . . . . . . . . . Re: Model manufacturing question - mould degradation - Kurt Laughlin - Jul 12, 2006 |
| . . . . . . Re: Model manufacturing question - mould degradation - Patrizio - Jul 13, 2006 |
| . . . . . . . . . Re: Model manufacturing question - mould degradation - Scott Dimmick - Jul 13, 2006 |
| . . . . . . . . . . . . Re: Model manufacturing question - mould degradation - Patrizio - Jul 13, 2006 |
| . . . . . . . . . . . . . . . Re: Model manufacturing question - mould degradation - michael kenny - Jul 13, 2006 |
|
|
