What use 6.5mm rod stock?

[GreensandsParticipant @greensands]

I half jest but having recently acquired at a give away price a number of 13” lengths of silver steel under the impression it was ¼ diameter stock but only to find at a later date that it miked up at 6.5mm. Although by no means a disaster it does raise the question, being essentially old school Imperial, what possible applications might find use for 6.5 mm stock?

[bernard towersParticipant @bernardtowers37738]

Have lathe will turn!

[JasonBModerator @jasonb]

Use them up to make small form tools.

If you need things like headed pivot pins then it’s not too difficult to turn the head down to 1/4″ at the same time as the shank.

[SillyOldDufferModerator @sillyoldduffer]

Though design often benefits from using standard stock sizes, it’s not the law!  In my home, measuring household items reveals many odd values, neither metric or imperial. Maybe these unexpected dimensions result from strength and material cost considerations.  Or CAD, where designers don’t have to think in stock sizes.

Industry can order whatever diameter they like, H8 or better:

Is it a coincidence that 13″ is one third of a metre?  It doesn’t matter!

Dave

 

 

 

 

[JasonBModerator @jasonb]

6.5mm is a “stock” size. upto 20mm it comes in 0.5mm increments.

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