| ID: | 3250 |
| From: | King =?iso-8859-1?Q?K=E9vin?= <pc...@cuvoodoo.info> |
| Date: | Wed, 7 Aug 2019 13:41:41 +0200 |
| Subject: | Re: [pcb-rnd] new layer groups: assembly, courtyard/keepout - |
| in-reply-to: | 3245 from ge...@igor2.repo.hu |
| replies: | 3251 from King =?iso-8859-1?Q?K=E9vin?= <pc...@cuvoodoo.info> |
On Wed, Aug 07, 2019 at 05:07:51AM +0200, gedau@igor2.repo.hu wrote: > First round: if you already have drawn/generated at least 3 boards and/or > footprints where you used custom doc or mech layer groups, please list > them in a reply to this mail: > > - layer group type > > - layer group location > > - layer group purpose > > - how did you use the layer group: what kind of object did you place and > what did they represent > > (I am after _existing practice_ now, so please do not answer if you did > not yet use such layer groups with pcb-rnd. Collecting general good ideas > will happen later.) here a list of mech/doc I already used (some of them in the past, not in pcb-rnd though) refdes - type: doc - location: top/bottom - purpose: none - description: on very tight boards there is no space to place the reference designators on the silkscreen layer, thus I put them on a separate layer and use/print it in the assembly manual (if there is enough space on the board I merge the layer in the output with the silkscreen slots - type: mech - location: global - purpose: uroute, proute - description: the slots (non round holes) for the mounting tabs of shells/shields/connectors (the shape includes the info it it should be plated or not) courtyard/keepout - type: doc - location: top/bottom - purpose: none - description: a zone (outline) where not to put another elements to avoid pick&place or hand soldering issues assembly - type: doc - location: top/bottom - purpose: none - description: the actual element shape (shell/...) (not the same than the part outline on the silkscreen) physical - type: doc - location: top/bottom - purpose: none - description: the size of the complete part. this is a bit different than assembly. for example for a screen in the assembly layer I only put the connector part, but the screen is much larger. this helps me avoiding collision of high parts (e.g. electrolytic cap not in the way of a pyramid/side mounted fans, or screen) v-cut - type: mech - location: global - purpose: none - description: line across the hole board for v-cuts/grooves (often mixed with the outline layer with 0 size line, and manufacturer note) glue - type: mech - location: top/bottom - purpose: none - description: where to put glue dots. I've only used it once with a double side board and a large/heavy part where surface tension was not enough (and after manufacturer request) coating - type: mech - location: top/bottom - purpose: none - description: were to spray surface coating (e.g. barometer/microphone need to NOT be coated). to be honest I never actually used that. I did the coating myself by hand (2 boards) and knew what to do, but I was wondering how I would communicate it with the manufacturer for mass production. the rest are just board-specific doc layers with notes, remarks, assembly instruction. these are very individual and done my hand.
Reply subtree:
3250 Re: [pcb-rnd] new layer groups: assembly, courtyard/keepout - from King =?iso-8859-1?Q?K=E9vin?= <pc...@cuvoodoo.info>
3251 Re: [pcb-rnd] new layer groups: assembly, courtyard/keepout - from King =?iso-8859-1?Q?K=E9vin?= <pc...@cuvoodoo.info>