Differences

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--- equipment:cnc:pcbmill [2025/07/06 11:42] – kit
+++ equipment:cnc:pcbmill [2025/07/23 19:06] (current) – Added dust shroud files samp20
@@ Line 6: / Line 6: @@
 <callout title="Crush / Entanglement" type="warning" icon="true"> This equipment is hazardous to the user or those around them, take care during use.</callout>
-====Manual====
+=====Risks=====
+  * Low risk of cuts
+  * Noise levels - below 80 db (last test was 68 db without extraction) but ear defenders advised, please offer to those around
+  * Do not leave completely unattended - please keep a close eye and stay upstairs in the general use room
+  * Pinch injury risk
+  * Entanglement risk - no loose clothing/jewellery/untied long hair
+  * Dust build up and hazardous vapours depending on materials being cut extraction system must be used
+Full Risk Assessment can be found here: **[TBC]**
+Please also refer to the generic electrical and manual handling risk assessments
+=====Induction=====
+This machine is in person induction only at the moment.
+Please an induction request on the forum.
+=====Specifications=====
+  * **Location:** Upstairs, through the general use room, down three steps into the CNC and electronics room, in the corner on your left as you enter.
+  * **Model:** Bungard CCD/MTC CNC
+  * **Weight:** 35 kg ( before mods)
+  * **Dimension:** 700 x 800 x 300 mm
+  * **Working area:** 325 x 495 x 38
+  * **Table:** Precision aluminium table, both sides milled over, for approximately zero height tolerance
+  * **Tool change:** Manual
+  * **RPM:** 3,000-63,000
+  * **Software:** RoutePro3000 **(check)**
+  * **Drive system:** High load-2x2-phase stepper motors on all 3 axis for real milling applications and correct adjustment of the cutting speedfor all tools
+  * **Step resolution:** Software selectable: 1 mil, ½ mil, ¼ mil (= 6.35 Micrometer)
+  * **Precision:** Precision: +/- 1 step
+  * **Position accuracy:**20 ppm (0.002%) over the entire work space (9,9 µm with a work area of 495 mm)
+  * **Tool diameter:** 0.1mm – 3,145mm (recommended, bigger tool diameter possible)
+  * **Board fixation:** double sided tape (span fixing, clamp fixing, reference pin system possible with additional accessories)
+=====Manual=====
 Please note that custom modifications have been made to this system to improve health and safety and ease of use.
 [[https://www.bungard.de/images/downloads/anleitungen/ccd_manual_e.pdf]]
+==== Modifications ====
+  * Emergency stop button - for emergencies
+  * RFID Lock out box - to prevent un-inducted users from using the equipment
+  * New controller - to control the PCB Mill
+  * Height mapping - to give more control and accuracy of the actual height of the work piece for more accurate work
+  * Extraction system - to provide better extraction of dust and vapours
+=====Introduction====
 ====PCB Milling====
@@ Line 16: / Line 60: @@
 The main advantage of PCB milling is the quick turn around time, hence milling is best used for rapid PCB prototyping.
+Currently the machine is not set up for: Special operating conditions or heavy work pieces may require that the machine is encapsulated. A protection cover is available
+as an option. Also additional work piece clamps will need to be made/purchased.
+==== Extraction ====
+**Extraction system:** Numatic Henry Pet Vacuum Cleaner
+**Filters:** Hospital grade HEPA Allergy filters for Henry [[https://henrybags.co.uk/collections/henry-hoover-filter/products/hospital-grade-henry-allergy-hepa-filter-12-inch-compatible?variant=15782017794114|Hospital grade HEPA Allergy filters for Henry]]
+** Dust shroud design:** {{ :equipment:cnc:pcbmill:dust_shroud.fcstd |}}
 ====Considerations when designing a PCB for milling ====
@@ Line 137: / Line 191: @@
   * If you want to use the 2.5Dsetup for milling the second side, you need to place the pins far enough away for the skirt not to hit them
   * putting the pins in 2mm holes is a tight fit. You'll need to hit them with a hammer. DO NOT DO THIS ON THE MILLING BED. Take the PCB out and then tap the pins in
-  * I've been getting alright accuracy. OK for standard 2.54mm pitch holes. If you need to go much lower, then you might struggle. It might be possible to nail this down a bit futher. Maybe with deeper holes? More of them?
+  * I've been getting alright accuracy. OK for standard 2.54mm pitch holes. If you need to go much lower, then you might struggle. It might be possible to nail this down a bit further. Maybe with deeper holes? More of them?
 ==== Picking your milling bit ====
 You can mill with either an engraving v-bit or an end mill. I'm having better success with an end mill (the v bit does work, but I'm getting messy results. Might just need more practice. I'm currently using a 0.7mm end mill to reasonable success. [[https://support.bantamtools.com/hc/en-us/articles/115001656913-Engraving-Bit-Isolation-Milling | See here for some info about the options from Bantam]]
+=====Clean up=====
+  - Leave the machine set up ready for the next user.
+  - Clean and dust free.
+!!!REMEMBER TO LOG OUT ON THE RFID LOCKOUT BOX!!!