[Systems Engineering Teachers' Mailing List] Fwd: [esnet] UP! Printers and removal of print lines - another realSTEM activity

[David Fletcher]

Sent from my iPad
David Fletcher


Begin forwarded message:

> From: "Tony Pugatschew" <support at intellecta.net>
> Date: 12 June 2014 1:59:40 PM AEST
> To: "ESNET @ iiate" <esnet at iiate.asn.au>
> Subject: [esnet] UP! Printers and removal of print lines - another realSTEM activity
> Reply-To: "ESNET @ iiate" <esnet at iiate.asn.au>
> 
> Dear Esnetters,
> Just a quick one to get amazing quality from your UP1 ABS 3D prints. Sometimes the print lines are objectionable and you want a gloss finish.
> Rubbing with acetone is messy. I was at a school today and blown away by the following process.
> Hang the part over a warm bath of acetone, The vapour does the job. Don’t use a flame but a water bath on a hot plate. I tried with an old beaker and it works a treat.
> 
>  
> Looks like there may be visits to the chem labs or maybe the kitchen!
> Apparently there is an increase in strength also  ( OOP!s I can see a STEM activity – print 10 identical bars of material, Acetone treat 5, do a destructive bend test by adding mass to the end, plot the data and examine the errors, print a I beam and repeat the process, print a hollow beam with tubes to simulate bone structure), Remember a good STEM activity should have contributions from all the S, T, E and M.
>  
> Thanks
> Tony Pugatschew
>  
>  
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