DEC PDP-8/e Omnibus backplane lubrication

On May 11, 2021, at 7:38 AM, W2HX via cctalk <cctalk at classiccmp.org> wrote: ?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