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corrected invert parameter and exposure time

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cpu
2026-06-14 12:06:07 +02:00
parent 7415009b86
commit 24cf2269fd
1 changed files with 16 additions and 13 deletions
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Readme.md
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@@ -149,7 +149,7 @@ Plotted to 'gerbers/Flow_Controller_Panel-B_Mask.gbs'.
``` ```
### 4. Exposure ### 4. Exposure
We need to **invert all** layers: `F.Cu,B.Cu,F.Mask,B.Mask,F.SilkS,B.SilkS`. We need to **invert copper and soldermask** layers: `F.Cu,B.Cu,F.Mask,B.Mask,F.SilkS,B.SilkS`.
We need to **mirror all front** layers: `F.Cu,F.Mask,F.SilkS`. We need to **mirror all front** layers: `F.Cu,F.Mask,F.SilkS`.
@@ -157,7 +157,10 @@ Traces should appear black on white background.
- background = UV exposed = resist removed = etched away - background = UV exposed = resist removed = etched away
- traces = dark = resist kept = copper stays - traces = dark = resist kept = copper stays
Start with `--exposure 60` and bracket from there — Bungard presensitized at 405nm typically lands between 30–120s depending on board vintage and storage. Start with `--exposure 60` and bracket from there — **Bungard** presensitized at 405nm typically lands between 30–180s depending on board vintage and storage.
UV light curing Solder Mask from **Mechanic** needs 15 minutes when prebaked (heat it to 80C for 15 minutes) otherwise 30 minutes. Use green as the solder mask and white for the silkscreen.
#### 4.1. Export print files for copper layers #### 4.1. Export print files for copper layers
@@ -167,34 +170,34 @@ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-Front.gtl \
--invert --mirror --exposure 120 \ --invert --mirror --exposure 120 \
--output pm4n/Flow_Controller_Panel-Front.pm4n --output pm4n/Flow_Controller_Panel-Front.pm4n
pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-Back.gtl \ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-Back.gbl \
--invert --exposure 120 \ --invert --exposure 120 \
--output pm4n/Flow_Controller_Panel-Back.pm4n --output pm4n/Flow_Controller_Panel-Back.pm4n
``` ```
#### 4.2. Export print files for soldermask layers #### 4.2. Export print files for soldermask layers
Export the front and back **soldermask** layers for 300 seconds exposure Export the front and back **soldermask** layers for 900 seconds exposure
```bash ```bash
pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-F_Mask.gtl \ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-F_Mask.gts \
--invert --mirror --exposure 300 \ --invert --mirror --exposure 900 \
--output pm4n/Flow_Controller_Panel-F_Mask.pm4n --output pm4n/Flow_Controller_Panel-F_Mask.pm4n
pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-B_Mask.gtl \ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-B_Mask.gbs \
--invert --exposure 300 \ --invert --exposure 900 \
--output pm4n/Flow_Controller_Panel-B_Mask.pm4n --output pm4n/Flow_Controller_Panel-B_Mask.pm4n
``` ```
#### 4.1. Export print files for silkscreen layers #### 4.1. Export print files for silkscreen layers
Export the front and back **silkscreen** layers for 300 seconds exposure Export the front and back **silkscreen** layers for 900 seconds exposure
```bash ```bash
pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-F_Silkscreen.gtl \ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-F_Silkscreen.gto \
--invert --mirror --exposure 300 \ --mirror --exposure 900 \
--output pm4n/Flow_Controller_Panel-F_Silkscreen.pm4n --output pm4n/Flow_Controller_Panel-F_Silkscreen.pm4n
pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-B_Silkscreen.gtl \ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-B_Silkscreen.gbo \
--invert --exposure 300 \ --exposure 900 \
--output pm4n/Flow_Controller_Panel-B_Silkscreen.pm4n --output pm4n/Flow_Controller_Panel-B_Silkscreen.pm4n
``` ```