| The Shop > Composites & Plastics |
| Fan |
| << < (2/4) > >> |
| John Rudd:
'K had another go on the mill with one more of me blank disc.... Got all the blades cut nicely, just had to clear out 'bits' in between.....swapped to a smaller cutter (3mm) going nicely when'crack' another one broken....So more scrap perspex..., I've realised what I'm doing wrong here I think..... As I approach the edge of the disk, the cutter seems to be forcing the disc down...Now its only supported in the centre on the mandrel I made for it...so I think it needs a disc of the same diameter at least to offer support to the edges.... :scratch: Is my theory flawed in some way or should I just go back to the nursing home? :lol: Anyway here's a foto of what I need to make..... |
| appletree:
Try putting vacuum cleaner fan in google, in the good old days they were aluminium. Not sure what you are after or how efficient it needs to be but a simple disc with blades rivetted on would make quite a draft. It never ceases to amaze me what industry can produce when needed often very simple (cheap and nasty on the face of it) but reliable and cost effective. |
| efrench:
Make a cut, put in a backer piece. Continue until all blades are cut. or Get a 3d printer :wave: |
| John Rudd:
--- Quote from: efrench on June 18, 2016, 02:34:38 PM ---Make a cut, put in a backer piece. Continue until all blades are cut. --- End quote --- Care to elabborate please? Pictures are good :lol: |
| efrench:
|
| Navigation |
| Message Index |
| Next page |
| Previous page |