DEC PDP-8/e Omnibus backplane lubrication

[W2HX]

I would use caig deoxit. They have a version that has lubrication properties. I think it is the "S" series.
Eugene


-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Tom Hunter via cctalk
Sent: Monday, May 10, 2021 11:14 PM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Subject: DEC PDP-8/e Omnibus backplane lubrication

 What is the best type of lubricant for Omnibus backplanes?
It can be a struggle to insert and remove PDP-8/e boards into the Omnibus.
There is a risk of damage to the brittle bakelite connector housings on the Omnibus PCB.
Traditional contact sprays should work but have two problems:

1) they remain wet and over time will attract and retain dust
2) the solvent and lubricant *may* weaken or attack the bakelite

There are some PTFE (Teflon) based lubricant sprays which create a dry film. Would this type of spray work?

Any suggestions on what I could use that reduces the strain on the Omnibus and the PCBs during insertion/removal without creating new problems?

Thanks and best regards
Tom Hunter