Small

09/01/2020

Approved - Awaiting Purchase

Tom Coates

Connect the CNC machine to the existing extraction system for the laser cutter, as originally suggested by Alex Rowe in this post on the mailing list. This will allow us to use the oil mist system without it making a mess all over the workshop.

The plan is to add a T piece where the existing ducting connects to the extractor, then run new solid ducting in parallel with the existing ducting, past the laser and on to the CNC machine. The connection between the solid ducting and the machine will use flexible ducting, the same as on the laser cutter. A dust filter will be added where the ducting connects to the CNC, to prevent dust or swarf from entering the ducting. Additionally, a control system will be added using a couple of mains-rated relays to automatically power on the extractor when either the CNC or the laser cutter are in use (currently the extractor is controlled by the laser cutter only).

Item Link Qty Price Total
Spiral tube duct 150mm x 3m http://www.ductstore.co.uk/acatalog/Spiral-Tube-Duct-3m-Lengths.html 4 £18.04 £72.16
150mm male coupler http://www.ductstore.co.uk/acatalog/info-NPL150.html 2 £2.19 £4.38
Right angle bend 150mm http://www.ductstore.co.uk/acatalog/90_Bends.html 5 £7.78 £38.90
T section 150mm http://www.ductstore.co.uk/acatalog/150_t_piece.html 1 £12.99 £12.99
Filter box w/ filter http://www.ductstore.co.uk/acatalog/Duct_Filter_Boxes.html 1 £31.75 £31.75
150mm radiused flanged spigot http://www.ductstore.co.uk/acatalog/Radiused-Flanged-Spigots.html 1 £2.39 £2.39
Hose clamp 60-170mm http://www.ductstore.co.uk/acatalog/Hose_Clips.html 2 £0.94 £1.88
Duct sealant http://www.ductstore.co.uk/acatalog/Sealant.html 1 £2.25 £2.25
Duct tape 50mm x 50m http://www.ductstore.co.uk/acatalog/Individual_Rolls.html 1 £2.78 £2.78
Cable ties 295mm pack of 50 https://www.diy.com/departments/b-q-black-cable-tie-l-295mm-pack-of-50/177967_BQ.prd 1 £2.29 £2.29
Aluminium mesh sheet https://www.diy.com/departments/aluminium-panel-l-0-5m-w-250mm-t-1mm/256058_BQ.prd 1 £6.23 £6.23
Panel mount relay https://uk.farnell.com/finder/66-82-8-230-0000/relay-dpdt-250vac-30a/dp/1329690 2 £14.36 £28.72
Plastic enclosure https://uk.farnell.com/multicomp/g3121/box-abs-ip65-240x120x100mm/dp/1526657 1 £11.35 £11.35
Fused IEC inlet https://uk.farnell.com/multicomp/jr-101-1f/conn-inlet-iec-fused-6-3a-panel/dp/9521615 3 £1.72 £5.16
IEC cable 3m https://www.amazon.co.uk/StarTech-com-PXT101UK3M-Computer-Power-BS-1363-Black/dp/B00B22TCRW 3 £4.63 £13.89
Mains socket https://www.diy.com/departments/mk-13a-white-1-gang-unswitched-socket/262236_BQ.prd 1 £2.50 £2.50
Subtotal £239.62
VAT (20%) £47.92
Total £287.54

We already have left-over brackets for the ducting.

I will do most of the installation work including building the control box. Will need one other volunteer to help lift the ducting into place. May also need assistance from someone who has the right tools for cutting a hole in the top of the CNC.

£287.54

Full funded by Hackspace

Existing laser cutter extraction system

Committee Sanity Check:

A majority committee vote is needed for all proposals:

  1. Felix H
  2. Nick G
  3. Matt G

Supporting Members:

A small proposal needs 5 member votes:

  1. Alex Rowe
  2. Tom Coates
  3. Joe Dusta
  4. Ryan Hale
  5. Billy-George Price-sprackland


Go back to the proposals page.

  • botlab/hsproposals/hsproposals_2020-01-05-cnc-extraction
  • Last modified: 17 months ago
  • by mattg