I was watching one of the broadcasts of a space walk on the ISS. I noticed the Pistol Grip Tool (Thanks Courageous Potato) looks like its made of polished stainless steel. Why do these tools have shiny metalic surfaces? Is it for visibility or heat dissipation?

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    $\begingroup$ If we pain them and after some time the tool releases paint flakes, that may become a problem I suppose $\endgroup$ – Prakhar Oct 18 '19 at 14:31
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    $\begingroup$ Probably a thermal control coating like 'AZ-2100-IECW' with low heat absorption to prevent the tool from catastrophically heating up due to direct solar exposure. I don't know specifically which coating though, as the one I've linked is white. Here's a list of other examples. $\endgroup$ – Magic Octopus Urn Oct 18 '19 at 14:41
  • $\begingroup$ Note this was not a plug for the company, just one of the many companies used by NASA in certain designs. $\endgroup$ – Magic Octopus Urn Oct 18 '19 at 18:26
  • $\begingroup$ The answer is always "thermal control".... $\endgroup$ – Organic Marble Oct 19 '19 at 11:13
  • $\begingroup$ For your reference: this is the Pistol Grip Tool (PGT) $\endgroup$ – CourageousPotato Oct 19 '19 at 18:54

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