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WTF wallet attack !!

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PekkaNF:
Very nice thread...I am agreeing pretty much with everybody too.

OT: Vac forming....One guy I know made a very modest production line to produde dome shaped lamp shades....they found out that domes come a little unbalanced out. When you hang them, they tilt and some procentage of people see it....therefore they cut and finished the rim first and then found the centre (where it hangs straight) and drilled the hole for light fixture....who would have quessed.

Pekka

* Fixed typos

tom osselton:
I just finished mine tonight although I'll have to mod the slides a bit I'm thinking the arms that are fixed above the tray are flexing inwards when lifted I've picked up some small bearings to keep it true.

PK:

--- Quote from: PekkaNF on September 10, 2016, 02:28:09 AM ---One guy I know made a very modest production line to produce dome shaped lamp shades....they found out that domes come a little unbalanced out, when you hang them, they tilt and some procentage of people see it....therefore they cut and finished the rim firs and then found the centre and drilled the hole for light fixture....who would have quessed.

--- End quote ---
Interesting...
Cutting out is certainly the tricky bit if you are making lots of parts. We laid up some glass (as if we were taking a mould) over the part, then used that as a vacuum fixture to hold it upside down in the CNC router which milled the part out of the sheet.

PK:

--- Quote from: tom osselton on September 10, 2016, 03:14:30 AM ---I just finished mine tonight although I'll have to mod the slides a bit I'm thinking the arms that are fixed above the tray are flexing inwards when lifted I've picked up some small bearings to keep it true.

--- End quote ---

I reckon you did a pretty good job of it.  What are you using for heating elements?  We cut up some toasted sandwich makers, but they didn't heat by direct IR.  Good because we got uniform heating, bad because we had a 10 minute cycle time on 2mm ABS....
PK

tom osselton:
I found this at a tool store from a school art dept.
It does take a bit to heat up so am hoping to have a preheat then full power with arduino you can see the vacum behind it.
Heres a pic of it finished. I'd type more but the battery is beeping! :beer:

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