Hairline fracture

Posted by: jwickis

Hairline fracture - 19/11/2000 07:16

I noticed the other day that my knob has a dark 1/2" hairline fracture running from about the centerline of the knob over the outside edge of knob. It has just started to get very cold where I live and wonder if this has caused the plastic to shrink around the shaft. I don't leave the Mk2 in my vehicle overnite but I do leave it in during the day at work, there's no danger of theft there.

#090000695 Mk2 BLUE 12Gig
Posted by: rob

Re: Hairline fracture - 19/11/2000 09:15

Are you sure that's a crack? Almost all knobs have a slight mark exactly as you described - its a mould mark from the injection process.

Rob


Posted by: jwickis

Re: Hairline fracture - 19/11/2000 11:19

Still not sure but it's in an unusual place for such and it doesn't radiate from the centre of knob all the way to the edge. I have used one of those magnifying lights and still can't tell, maybe it is a mold mark I can't seem to feel an edge on the area.

Here's a photo attached that's as sharp as I can get.

#090000695 Mk2 BLUE 12Gig

Edited by jwickis on 19/11/00 01:03 PM.

Posted by: Paul

Re: Hairline fracture - 19/11/2000 15:12

don't look like a crack to me egdes are too straight

Posted by: rob

Re: Hairline fracture - 19/11/2000 15:15


Looks normal to me.

Posted by: jwickis

Re: Hairline fracture? possibly - 19/11/2000 16:03

Thanks I just needed your guys opinion more than anything and/or point out a possible plastic problem.

So it's a mold(mould) mark?
Now that I look even closer at the down button on left it has one of these faintly.














#090000695 Mk2 BLUE 12Gig
Posted by: rob

Re: Hairline fracture? possibly - 19/11/2000 16:12

The molten plastic flows through the injection tool in two directions and where it joins up that line is visible. You get that when working with metalic dyes, and to illiminate it a far more sophisticated tool would be required (well outside of our budget for the Mk.2 fascia). We didn't think it was too big a problem.

Rob


Posted by: jwickis

Re: Hairline fracture? possibly - 20/11/2000 17:16

I understand, no problem and thanks for the info.

#090000695 Mk2 BLUE 12Gig