@Laurie
Thanks for the excellent clarification on the issue.
Since I'm currently only planning DIY modules, I'll stick with the 2.5mm specs for now. The horizontal pitch of the strip is 0.2 inch for both 2.5 and 3mm, right?
@chris
Thanks for the tip about cutting the strip. I've done this in order to attach the Doepfer Bus Board to a rail. The spacing between the two holes near the center is 1.5 inch and thus wouldn't fit the rail without adjustment.
--- In ModularSynthPanels@yahoogroups.com, "Elby Designs" <elby_designs@...> wrote:
>
> The slots were originally designed to accept a plastic housing that acts as
> a retaining cage for the fixing screw. This is also why 2.5mm is the more
> recognised size on most eurorack systems.
> 3mm is the more common sized screw used in the euro-synth industry so first
> decision is do you want to fit in to existing gear or not (I offer both
> 2.5mm and 3mm tapped strips in my Construct-A-Rack series). Choosing 2.5mm
> maybe a problem.
>
> Having the slots will give you more room for movement in the rack but will
> mean that EVERY module you fit will need to be `positioned'. A 2.6mm hole
> for 2.5mm or 3.1 for 3mm going up to 2.7mm and 3.2mm respectively should be
> more than adequate for most.
>
> Best Regards
> Laurie Biddulph
> Mobile: 0400 257 645
> Web: www.elby-designs.com
>
> -----Original Message-----
> From: ModularSynthPanels@yahoogroups.com
> [mailto:ModularSynthPanels@yahoogroups.com] On Behalf Of chrisspotta
> Sent: Tuesday, 31 January 2012 12:40 AM
> To: ModularSynthPanels@yahoogroups.com
> Subject: [ModularSynthPanels] Re: Eurorack Mounting Hole Dimensions
>
> Hi
>
> I believe that the slotted rack mounting holes are just to allow the module
> to fit in either Doepfer or AS racks as they are not exactly the same.
>
> http://www.gearslutz.com/board/electronic-music-instruments-electronic-music
> -production/450034-analogue-systems-rack-rs10-15-non-modules.html
>
> --- In ModularSynthPanels@yahoogroups.com, "roglok" <roglok@> wrote:
> >
> > Hi,
> >
> > I need your advice on designing Eurorack front panels.
> >
> > Some manufacturers use slotted panel mounting holes (Cwejman, Metasonix),
> whereas others use round ones (Doepfer, Analog Solutions, Harvestman) as per
> the Doepfer specifications http://www.doepfer.de/a100_man/a100m_e.htm.
> >
> > What are your experiences? Are you occasionally having troubles fitting
> modules with precise holes?
> >
> > I am planning some very narrow modules (4HP) and slotted holes would
> further reduce the limited amount of space available for labels. Also, I'm
> using 2.5mm screws...
> >
>
>
>
>
> ------------------------------------
>
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