Anyone have a good standard of work for securing PC Boards in chassis?
I'm working on a few amplifiers - and bought a set of M3 nylon standoffs. I'm thinking of securing the boards with nylon bolts to these standoffs, and then either gluing the standoffs to the chassis- or drilling M3 screws into the standoffs from the bottom of the chassis. But that means countersinking and lots of through holes in the chassis.
Am I overthinking it?
THanks in advance,
Scott
.
I'm working on a few amplifiers - and bought a set of M3 nylon standoffs. I'm thinking of securing the boards with nylon bolts to these standoffs, and then either gluing the standoffs to the chassis- or drilling M3 screws into the standoffs from the bottom of the chassis. But that means countersinking and lots of through holes in the chassis.
Am I overthinking it?
THanks in advance,
Scott
.
I'm thinking of securing the boards with nylon bolts to these standoffs, and then either
gluing the standoffs to the chassis- or drilling M3 screws into the standoffs from the bottom
of the chassis. But that means countersinking and lots of through holes in the chassis.
Standoffs are easy, and they come in aluminum, steel, nylon, and in all sizes, threaded or not.
What's not to like? There's nothing wrong with screw heads on the bottom of the chassis.
Thanks Rayma.
It can be tricky to accurately drill holes for the pcbs.
I've used the pcb as a template, placing it on the mounting surface,
and tracing the mounting holes directly on the metal.
Then center punch the marked hole locations before drilling.
I previously had work access to DRO Milling Machines and now maker space access to similar/better CNC so I've used threaded standoff mostly with the ability to put hole patterns accurately where needed
but there are really good acrylic tape adhesive base standoffs - even with push-on snap ends
Sturdy Support Adhesive Lock-in / Release PCB Supports
I would definitely go with them if I didn't have access to the accurate DRO/CNC tools
but there are really good acrylic tape adhesive base standoffs - even with push-on snap ends
Sturdy Support Adhesive Lock-in / Release PCB Supports
I would definitely go with them if I didn't have access to the accurate DRO/CNC tools
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If it's an insulated Chassis then every screw head falls into the category......................There's nothing wrong with screw heads on the bottom of the chassis.
"all exposed conductive parts" !
Be aware, each metal screw head would need to be connected to the PE protected Chassis/metalwork.
I use a mill with readout too. It's nice not needing to "adjust holes" to make the screws go in.I previously had work access to DRO Milling Machines and now maker space access to similar/better CNC so I've used threaded standoff mostly with the ability to put hole patterns accurately where needed
but there are really good acrylic tape adhesive base standoffs - even with push-on snap ends
Sturdy Support Adhesive Lock-in / Release PCB Supports
I would definitely go with them if I didn't have access to the accurate DRO/CNC tools
I don't think I'd trust the adhesive mount standoffs. Nobody has gotten tie wrap bases to stick reliably for long periods of time near heat yet. This is likely the same glue. If the mounting surface is raw aluminum, nothing will bond well to it either.
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