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 Forum index » DIY Hardware and Software » The layout factory
EFM VCF 4622 Moog Taurus type Transistor Ladder
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jbeuckm



Joined: Nov 30, 2008
Posts: 165
Location: Stockholm
Audio files: 9
PostPosted: Fri Aug 25, 2017 3:17 am    Post subject: Reply with quote  Mark this post and the followings unread
jbeuckm wrote:
Cool LFLab!

Warning: I drew the Erthenvar jacks and they are not tested for manufacturing. I would like to have used slots, but I use overlapping holes because that's what the "pcbgcode" ULP can handle and it works on my CNC router.


If I put a .04" x .125" 'rectangle' on the 'Dimension' layer in Eagle, will iTEAD mill it as a slot?
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LFLab



Joined: Dec 17, 2009
Posts: 497
Location: Rosmalen, Netherlands
PostPosted: Fri Aug 25, 2017 11:15 am    Post subject: Reply with quote  Mark this post and the followings unread
Don't know to be honest, I have tried some alternative (ie. non rectangular) board outlines, and I put a big hole to feed cables through on a mixer PCB, and that worked fine. I am not sure if this means they do plated slots as well as bigger cutouts/contours, and I also do not know just how small these cutouts can be.
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jbeuckm



Joined: Nov 30, 2008
Posts: 165
Location: Stockholm
Audio files: 9
PostPosted: Tue Sep 19, 2017 11:49 am    Post subject: Reply with quote  Mark this post and the followings unread
I can confirm that iTead will mill this type of slot. Mine came back plated through and I think that is because it was on a pad. I drew the rectangle on layer 46 "Milling" of the package and I used their CAM job file "ITEAD_CAM_for eagle_7.x.cam". I zipped and uploaded all the files produced - not just the ones they mention.

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lilpaula87



Joined: May 11, 2020
Posts: 12
Location: Italy
PostPosted: Fri Oct 21, 2022 10:59 am    Post subject: Reply with quote  Mark this post and the followings unread
Hi guys, I've built this filter (jbeuckm v.2) and I'm loving the sound. Unfortunately I'm experiencing a pretty low volume on output in comparison with my other VCFs.
There is something I can mod in order to archive an higher volume on output and more saturation of the filter?
Maybe lowering some reistors?
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