Cut slot in metal enclosure door for ribbon keypad ?

[mpm]

On Saturday, October 26, 2019 at 10:25:47 PM UTC-4, Michael Terrell wrote:
> Did you use cutting oil with the punch, and oil the threads to reduce the drive friction??

Yes. Lube everywhere: Threads, cutting surfaces, etc.., and the washers when we were forced to jump to the unused threads.

Helped tremendously, but not enough.

 

[whit3rd]

On Saturday, October 26, 2019 at 4:43:41 PM UTC-7, mpm wrote:

On Saturday, October 26, 2019 at 5:36:19 PM UTC-4, whit3rd wrote:

Friction on the threads is the problem. It's possible to adapt it to a hydraulic puller

I also thought about converting it to hydraulic, but the keyed bolt is also what aligns the bottom half of the die. But that said, as long as you can align the two halves, hydraulic should work.

The same bolt just needs to get a threaded fitting to fit the puller; I"m not envisioning
an hydraulic press, but a (hollow-cylinder or double-acting) hydraulic puller
(
Like this (but probably you don't need 13.8 tons...smaller and cheaper would do)

<https://www.enerpac.com/en-us/cylinders/hollow-plunger-cylinder/RCH120>