look for "pcb spacer" they are available in all shapes and sizes
I don't know the size off the top of my head but it should probably be something around 10mm?

Just grab a plastic M3 spacer/standoff kit from quadcopter parts sellers on Amazon or eBay. It is dirt cheap for 100pc+ kits of all various sizes.

Look for item number 291166141865 on you-know-where.

Or order directly from them : http://spiratronics.com/pcb-hardware-and-encl … port-posts.html

Great, thx!

So I have tried those listed and a couble of toher spacers. But non of them do really fit. Some are too long, too short or the head is simply to big. Why are there so many different sizes 😁
Does anyone know spacers that fit? I mean, how do you guys make your daughterboards hold on the soundcard?

Really sorry if I lead you astray last time, but was somehow convinced these where the right size... 😮

Anyway, seems like the only way to make sure, would be to very meticulously measure the pcb's you actually have (for ALL the little parameters*), and go from there.
(*: for an example, check out the drawing in the pdf datasheets in links below, there are waay more measuring points than I imagined !)

I do not know the PCB thickness of your midi cards or sound cards, but for a Roland MPU-401AT, the hole diameter looks to be very close to 3mm, perhaps a 3.2mm headed pillar would work ? And the main length/'space' of the original pillar = 9mm (excluding the 'heads' on both ends). And main column pillar thickness = ca 3.6mm.

Looks like mouser.com has some rather close ones, though also have to pay attention to the fastening mechanism, as top and bottom are actually different from each other on these original pillars. Looking quite like the 8879-8887 models from mouser below. As opposed to those 9000-models with 'hooks' on both ends.

Here are some findings, the hole size seems to be workable (3,2mm with a +/- 0.25mm 'flex') but main pillar(spacer) thickness is almost 1 mm more than the original one (4.57mm vs 3,6mm), and length is 9,57mm (vs 9mm) - so check your own boards for what would fit or not:
https://eu.mouser.com/ProductDetail/Keystone- … 7DRKySOeDCL4%3D
Check out the datasheet for the different sizes and detailed picture etc:
https://eu.mouser.com/datasheet/2/215/879-8887-744893.pdf
Close enough perhaps ?

And make note of that picture, top and bottom are not the same. As they also have other models, which icons all look quite identical on the main page big list, but where the individual series datasheet picture shows something else...
https://eu.mouser.com/Electromechanical/Hardw … 1z0z2t8Z1yzd178
Just play around with the filters there, and make sure to look at each datasheet, to better understand what locking mechanism actually is used on each model.

Not sure if the are sold in boxes only, but if not you could of course just purchase a couple of each model/size etc you find promising, and then post your findings here ? 😄
.

PS: ...here is a different seller/model etc, though you have to buy minimum 40x of each model, at £4.07 per box, so...:
https://uk.farnell.com/essentra-components-fo … ost=DLMSPM-6-01
http://www.farnell.com/datasheets/2040051.pdf

https://uk.farnell.com/c/fasteners-mechanical … lock-in-support

Haha, no worries 😉 I got a measuring tool now and will measure the holes iny my daughterboards and sound cards. I just think it is weired that there does not seem to be a standard size and it is difficult to find an exact match.

skel2raw wrote on 2020-07-12, 07:13:

Haha, no worries 😉 I got a measuring tool now and will measure the holes iny my daughterboards and sound cards. I just think it is weired that there does not seem to be a standard size and it is difficult to find an exact match.

Heh, yeah, I suppose they were usually included with the hardware, and never sold separatly... I still assume there IS a 'standard' size, surely must be - as the cards etc are standardized vs this universal wave connetcor, but 20-ish years later no-one has reason to make spacers to that particular spec anymore...

- Let us know what you find then...?
And model names etc of your cards and midi boards. AND, if some of those mouser spacers actually will fit or not (?!).
As I'm pretty sure that '534-8882' model is very very close.
Was considering ordering some myself, but seems like they actually ship from the US (at least so they told me in a chat), and minimum shipping cost is 20 euro with FedEx... oh well.

TR Fastenings TRMDLSP1-10M-01 does not work for this purpose. The spacer part of the post is perhaps a millimeter shorter than the existing spacers on my Media Vision wavetable card, so that is acceptable, but the tips are too narrow, i.e. there is no friction when the tips are inserted into the wavetable daughterboard or sound card holes. So avoid these: https://www.newark.com/duratool/dtrmdlsp1-10m … k50/dp/43Y4188# .