HP calc case thermoplastic types

For strange mysterious reasons the thought crossed my mind what is the softening temperature of the plastics used in the HP calculator cases? Always thought the cases were an ABS type thermoplastic (don't ask me why).

Does anyone know the thermoplastic type & softening temperature of the classic, woodstock, etc. cases. No particular reason to know, just struck me as "that would be interesing".

(about the same time my aneurysm set it, but whatever)


I don't know the answer to your question but anything you find out I would like to hear about.

I can tell you one interesting fact (well, I found this very interesting).

The case plastics are generally extremely resistant to acetone.

M.E.K. (Methyl Ethyl Ketone) does affect it but it does not melt it. More like oxidizes it.


I have a MEK based adhesive made by Plastruct called "Plastic Weld" that does seem to melt the surface of the plastic used on a 41 case. I have successfully used to to repair cracked parts, which it is very good for as it is a thin as water, and will seep into cracks.

Possibly Related Threads…
Thread Author Replies Views Last Post
  Is Linux common among us RPN types? db (martinez, ca.) 46 16,388 12-11-2013, 08:25 PM
Last Post: Paul Guertin
  HP Prime Tutorial #4 is up (CASE/CHOOSE/INPUT) Eddie W. Shore 1 1,307 11-15-2013, 07:32 AM
Last Post: Davi Ribeiro de Oliveira
  Leather case for the HP-Prime Karl-Ludwig Butte 9 3,937 10-19-2013, 06:08 PM
Last Post: Eddie W. Shore
  Advanced User's Manual and solution to the ambiguity of data types [HP-Prime xCAS] CompSystems 15 5,539 08-20-2013, 03:37 PM
Last Post: Thomas Klemm
  HP Prime - transferring between calc and PC Andy B (Australia) 3 1,668 08-15-2013, 05:29 PM
Last Post: Tim Wessman
  wp34s calc to calc communication Andrew Nikitin 1 1,169 07-29-2013, 01:57 AM
Last Post: Marcus von Cube, Germany
  HP-50G belt clip case Dan Lewis 6 2,188 04-17-2013, 10:51 AM
  HP Calc Series Mic 3 1,591 03-21-2013, 01:34 AM
Last Post: Mic
  HP 39gii: CASE Syntax Eddie W. Shore 3 1,588 02-20-2013, 03:58 PM
Last Post: Eddie W. Shore
  Still a new colour calc ! When you'll make it HP ? Mic 10 2,987 01-13-2013, 09:17 AM
Last Post: Marcus von Cube, Germany

Forum Jump: