Jump to content

Blue discolouration on bones


Recommended Posts

I honestly never seen this before.  I'm no expert, but my first two thoughts are either the injection machine still had some residue from a previous job, or the piece just encountered some sort of blue coloring.

 

How brave are you?  If you cut into the blue area, does the color go all the way through, or can you shave it away?

  • Like 1
Link to post
Share on other sites

I have never seen anything like this. 
 

Have you tried cleaning it off?

 

I would try, in order: water, simple green, dish soap, alcohol, and maybe stop there. See if anything dissolves the (?)ink.


It could be the last vestige of plastic from a completely different product ( that was blue) that wasn’t quite cleaned out of the injection machine. 

  • Like 1
Link to post
Share on other sites
On 1/30/2021 at 10:32 AM, TGP said:

I have never seen anything like this. 
 

Have you tried cleaning it off?

 

I would try, in order: water, simple green, dish soap, alcohol, and maybe stop there. See if anything dissolves the (?)ink.


It could be the last vestige of plastic from a completely different product ( that was blue) that wasn’t quite cleaned out of the injection machine. 

Considering Bones are still outsourced to Chinese companies that have multiple clients in addition to Reaper, it is a likely reason.

 

Though I would expect streaks instead of the concentrated blue at those tips.

  • Like 2
Link to post
Share on other sites
2 hours ago, Cranky Dog said:

Considering Bones are still outsourced to Chinese companies that have multiple clients in addition to Reaper, it is a likely reason.

 

Though I would expect streaks instead of the concentrated blue at those tips.


Just some thoughts:
the tips of the wings are at the extremes of the parts, which presumably would be innermost on the moulds, so if there were some blue plastic residue it is reasonable that it got shoved in front of the new bones material, and therefore deposited innermost on the moulds. If the residue was in thepipes and not heated through before injecting might this explain the concentration? (presumably the pressure and the heat of the melted white bones would be enought to shape it properly in the mould?)

  • Like 3
Link to post
Share on other sites

Having worked in plastic injection in the automotive industry, the injection ports not being completely clean seems unlikely. It is possible the machine that heats the plastic could have some residue, so that's possible. Factories are usually allowed a certain amount of regrind (previously injected parts that did not meet quality standards ground up) and it is possible to get some off-color material mixed in. Of course I don't know what the contract with the manufacturing firm allows, so I cannot say for certain that's what happened.

 

Either way the parts are good to be painted.

  • Like 3
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...