C414 EB-style capsule mounting?

[OneRoomStudio]

If you want some advice, use the Neumann circuit for the U47 with the 6CW4 nuvistor. I believe it is the best overall, considering the original U47 FET and U87, which I have owned for years.

???

This thread is about a C414 EB

 

[ran]

yes i know , but if you want do a new projet , remember.

 

[OneRoomStudio]

I will keep that in mind, thanks.

Here's a model taking those measurements into account and adding additional pass-through holes. This should be accurate. Anyone want to check it? @soliloqueen - what would the rough per-item cost be to do these in neoprene?

FYI, I attached a .stl file, but to attach it, I had to use @MidnightArrakis's method of adding ".pdf" to the end. Just delete that, and the file should open. Also, this file is in mm - since it's easier for me to work in, and it's for a European mic anyway, haha.

 

[soliloqueen]

I will keep that in mind, thanks.

Here's a model taking those measurements into account and adding additional pass-through holes. This should be accurate. Anyone want to check it? @soliloqueen - what would the rough per-item cost be to do these in neoprene?

FYI, I attached a .stl file, but to attach it, I had to use @MidnightArrakis's method of adding ".pdf" to the end. Just delete that, and the file should open. Also, this file is in mm - since it's easier for me to work in, and it's for a European mic anyway, haha.

View attachment 146642
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View attachment 146644

In bulk? Maybe like 50 cents for a small amount. Like 15 cents for a large amount. It's the mold that would cost money, not sure how much for something with this many holes in it

 

[MidnightArrakis]

I will keep that in mind, thanks.

Here's a model taking those measurements into account and adding additional pass-through holes. This should be accurate. Anyone want to check it? @soliloqueen - what would the rough per-item cost be to do these in neoprene?

FYI, I attached a .stl file, but to attach it, I had to use @MidnightArrakis's method of adding ".pdf" to the end. Just delete that, and the file should open. Also, this file is in mm - since it's easier for me to work in, and it's for a European mic anyway, haha.

[MidnightArrakis's method of adding ".pdf" to the end] -- THANKS!! for the mention!!! I appreciate that very much!!!

[Anyone have experience designing for 3D printing?] -- You may want to contact @ruffrecords about 3D-printing. He has recently gotten into it and he has discovered that depending upon the type of filament material used and some other factors, that your hole dimensions will end up being printed -- a smidgen smaller -- than your intended dimension. IIRC.....and, at least for his projects, Ian had come up with some manner of an "offset" to counteract the 3D-printing error. He can go into much more detail about all of this than I can. I just design stuff.

Somewhat recently, I have imported some of the -- STL -- files that Ian had posted here into my SolidWorks Premium program and tweaked his files a bit in order to get his hole dimensions to a point that worked for him. I think it took the two of us only 2 or 3 iterations to hone-in a final dimension. And, like you had mentioned earlier, I then resaved his updated "STL" files and added-on the "PDF" extension in order to attach and post it here on this forum.

I'm good.....

/

 

[OneRoomStudio]

Thanks, @MidnightArrakis, those are some good tips. The place I'm thinking of making some prototypes specs +/-0.25mm tolerances for SLS manufacturing, which should be fine for this. I think I'm going to order a pair (it's a $70 gamble, but worth it in my opinion, compared to the price of the capsules that will be mounted on top).

@soliloqueen - if these prototypes fit/work well, feel free to use the 3D model to make a bach for sale. I don't know how many people are building 414EB clones, but maybe there's a niche market?

 

[amplexus]

Capsule mounts alone are honestly one of the things that made investing in a good 3D printer nearly the smartest tool buying decision I’ve ever made.

Honestly by the day I am more convinced that it’s a tool every shop and most households should own.

 

[Delta Sigma]

Capsule mounts alone are honestly one of the things that made investing in a good 3D printer nearly the smartest tool buying decision I’ve ever made.

Honestly by the day I am more convinced that it’s a tool every shop and most households should own.

I don't know anything about 3D printers, but I have a bunch of coworkers that print a lot.

What kind of materials do you use and what sort of insulative properties? Is it easy to achieve hi-z isolation? Can you make mounts with any sort of elasticity?

I've thought about the 3D printer rabbit hole, but I'd like to know I'd use it a lot before I really consider it. I've thought about making little shock mount wrenches. Some shock mount nuts are super hard to loosen after someone over tightens them.

 

[MidnightArrakis]

I will keep that in mind, thanks.

Here's a model taking those measurements into account and adding additional pass-through holes. This should be accurate. Anyone want to check it? @soliloqueen - what would the rough per-item cost be to do these in neoprene?

FYI, I attached a .stl file, but to attach it, I had to use @MidnightArrakis's method of adding ".pdf" to the end. Just delete that, and the file should open. Also, this file is in mm - since it's easier for me to work in, and it's for a European mic anyway, haha.

[I attached a .stl file] -- And.....here it is:



/

 

[OneRoomStudio]

[I attached a .stl file] -- And.....here it is:

View attachment 146721

/

What application are you using to view that and why are all those lines appearing? Neither application I use nor the application that the manufacturer I'm working with is using show those.

Edit: I just tried a free online STL viewer, and it looks fine in that one too:

 

[OneRoomStudio]

Ah, I answered my own question. They’re “mesh lines,” a normal part of STL files that most platforms don’t display. I’m guessing you’re using SolidWorks, which apparently displays them by default. In which case:

“When importing an STL file into Solidworks, you can choose to import it as a "Graphics Body" which will primarily display the mesh lines, or as a "Solid Body" where Solidworks may attempt to create a solid model from the mesh data, potentially smoothing out the appearance of the mesh lines.“

 

[amplexus]

I don't know anything about 3D printers, but I have a bunch of coworkers that print a lot.

What kind of materials do you use and what sort of insulative properties? Is it easy to achieve hi-z isolation? Can you make mounts with any sort of elasticity?

I've thought about the 3D printer rabbit hole, but I'd like to know I'd use it a lot before I really consider it. I've thought about making little shock mount wrenches. Some shock mount nuts are super hard to loosen after someone over tightens them.

Almost all filament materials would have suitable dielectric properties for the job. I often use carbon fiber loaded filaments for prints which i would probably avoid just on the off chance they might pose an issue.

But even cheap and easy PLA would suffice. It’s got the weakest dielectric strength of all common filaments and even at that it’s still like 30kV/mm.

If you wanted to be fancy you could print in polycarbonate- but its touchy and difficult to get good results. And ABS is much easier and has something like 70kV/mm… but really obviously any of the common materials would be fine.

Yes you can print in soft materials that would have shock absorption properties. TPU is a flexible urethane and i have used it for mic pedestals and mounts for saddles before- and once for a full capsule mount for a Dachman mic where the whole capsule was surrounded so i wanted the mount to allow it to “snap in”. It worked perfectly but you ideally want a printer with a direct drive extruder- you can get away with a properly calibrated bowden setup for 95duro TPU but anything softer will fail to print properly. There are a number of printers on the inexpensive side that have direct drive setups.

 

[OneRoomStudio]

Almost all filament materials would have suitable dielectric properties for the job. I often use carbon fiber loaded filaments for prints which i would probably avoid just on the off chance they might pose an issue.

But even cheap and easy PLA would suffice. It’s got the weakest dielectric strength of all common filaments and even at that it’s still like 30kV/mm.

If you wanted to be fancy you could print in polycarbonate- but its touchy and difficult to get good results. And ABS is much easier and has something like 70kV/mm… but really obviously any of the common materials would be fine.

Yes you can print in soft materials that would have shock absorption properties. TPU is a flexible urethane and i have used it for mic pedestals and mounts for saddles before- and once for a full capsule mount for a Dachman mic where the whole capsule was surrounded so i wanted the mount to allow it to “snap in”. It worked perfectly but you ideally want a printer with a direct drive extruder- you can get away with a properly calibrated bowden setup for 95duro TPU but anything softer will fail to print properly. There are a number of printers on the inexpensive side that have direct drive setups.

I’m working with Protolabs, and they said they could print it in 70duro TPU, so that’s what I’m trying out.