HP33C Rear cover

[tektronixman]

I have an HP33C which has been dropped and the rear cover has been damaged Does anybody know where I could get a spare I have tried to remove the back cover by removing the two screws at the back but the front edge will not release is there technique to removing or is there more hidden fixings

[Dave Frederickson]

You can get a 3D-printed replacement here.

https://www.shapeways.com/shops/wants_beer

HP Spice Battery Door R4, $5.49.

[tektronixman]

Cheers
Colin

[PANAMATIK]

(12-03-2017 05:30 PM)tektronixman Wrote:  ... I have tried to remove the back cover by removing the two screws at the back but the front edge will not release is there technique to removing or is there more hidden fixings

There are no more screws, but Yes, it is difficult to separate the parts. You need some force. Try this instructions:

http://www.hpmuseum.org/cgi-sys/cgiwrap/...ead=151125

Bernhard

[aj04062]

I would comment that an old credit card or thin plastic is less damaging than a knife blade. Picking a plastic that is softer than the cover also reduces damage to the edges.

[jebem]

(12-04-2017 11:55 AM)aj04062 Wrote:  I would comment that an old credit card or thin plastic is less damaging than a knife blade. Picking a plastic that is softer than the cover also reduces damage to the edges.

Agree with you!
A plastic pry tool is what i use to open these precious cases.
The tool degrades fast, but that is the point: you don't dent or scratch the unit you are repairing.
My previous order was something like this one here:
https://www.ebay.co.uk/itm/REPAIR-TOOL-K...Sw0wRaEDc2

[tektronixman]

Thanks for all the advice I finally used a bit more force with and slowly managed to separate the front edge with the aide of a plastic card. I have managed to glue the damaged case back together with superglue gel as I could not contact the guy who is making the the 3D prints. I would prefer to replace with a 3D print or old spare so I will keep looking. The HP33C has an interesting history it was used by my Father to analyse data from the MINI roundabouts he invented back in the 1970's whilst working as a government scientist.

[SlideRule]

(12-05-2017 09:49 AM)tektronixman Wrote:  … HP33C has an interesting history … used … to analyse data from the MINI roundabouts … in the 1970's …

Do you retain the documentation for this bit-o-history (would make fascinating reading) and perhaps be a significant but unreferenced foundation for/in the following?
[attachment=5393]

BEST!
SlideRule

[Dave Frederickson]

(12-05-2017 09:49 AM)tektronixman Wrote:  ... I could not contact the guy who is making the the 3D prints.

No need to send Nate a message. Just select the part and click Buy Now.

https://www.shapeways.com/product/AVK4H5...d=62079637

[tektronixman]

Thanks just to be clear it is the entire back of the 33C I need not just the battery cover I cant see that on the web site thats why I was trying to contact him
Colin

[Dave Frederickson]

(12-05-2017 04:14 PM)tektronixman Wrote:  Thanks just to be clear it is the entire back of the 33C I need not just the battery cover I cant see that on the web site thats why I was trying to contact him
Colin

Ah, well that's a horse of a different color. Your best bet is for someone here to offer up a bottom case from their spare parts bin or look for a donor on eBay.

[Nate Martin]

(12-03-2017 05:30 PM)tektronixman Wrote:  I have an HP33C which has been dropped and the rear cover has been damaged Does anybody know where I could get a spare I have tried to remove the back cover by removing the two screws at the back but the front edge will not release is there technique to removing or is there more hidden fixings

tektronixman, drop me a PM. I might have something useful in the boneyard.

Nate