On Wednesday, 25 April 2018 16:32:15 UTC+1, Andrew Mawson wrote:

A friend has PLA printed a housing for his weather station sensor
electronics - this is mounted on a pole in the air exposed to all weathers
and so far has lasted over 4 years unaffected. However I have heard from an
acquaintance in Australia that PLA degrades in the high UV levels that they
get there.

Dipping in clear spirit based varnish effectively seals PLA - don't use
water based (for this or anything else for that matter !!!!)

Andrew

why?

wrote in message
...

On Wednesday, 25 April 2018 16:32:15 UTC+1, Andrew Mawson wrote:

A friend has PLA printed a housing for his weather station sensor
electronics - this is mounted on a pole in the air exposed to all
weathers
and so far has lasted over 4 years unaffected. However I have heard from
an
acquaintance in Australia that PLA degrades in the high UV levels that
they
get there.

Dipping in clear spirit based varnish effectively seals PLA - don't use
water based (for this or anything else for that matter !!!!)

Andrew

why?

'coz it's useless

Andrew

On Wednesday, 25 April 2018 19:00:38 UTC+1, Andrew Mawson wrote:
wrote in message
...
On Wednesday, 25 April 2018 16:32:15 UTC+1, Andrew Mawson wrote:

A friend has PLA printed a housing for his weather station sensor
electronics - this is mounted on a pole in the air exposed to all
weathers
and so far has lasted over 4 years unaffected. However I have heard from
an
acquaintance in Australia that PLA degrades in the high UV levels that
they
get there.

Dipping in clear spirit based varnish effectively seals PLA - don't use
water based (for this or anything else for that matter !!!!)

Andrew

why?

'coz it's useless

Andrew

I've got plenty of it doing its job no problem.

On 25/04/18 12:35, John Rumm wrote:
On 25/04/2018 01:08, wrote:
On Tuesday, 24 April 2018 18:35:58 UTC+1, John Rumm wrote:
On 24/04/2018 13:35, Tim+ wrote:
John Rumm Wrote in message:
On 24/04/2018 08:59, T i m wrote:
On Tue, 24 Apr 2018 00:11:14 -0700 (PDT), tabbypurr wrote:
On Tuesday, 24 April 2018 00:47:44 UTC+1, John Rumm
wrote:
On 23/04/2018 22:52, Andrew Mawson wrote:

Happy to share the .STL - de-munge my address and email
me and I'll forward it to you

Perhaps we should host some of that kind of stuff on the
wiki?

not a bad idea

+1

Definitely a modern take on the d-i-y and helping each other
theme. ;-)

I will need to tweak the allowable file types for upload -
since mediawiki by default only allows a limited list of file
types.

What are the typical file extensions?

(or perhaps its easier to simply allow .zip and assume anything
will be zipped first)


A bad idea surely? Zipped files are used to conceal all sorts of
nefarious things.

On an open wiki sure... ours is writeable by account holders only
which limits the damage somewhat.

A zip file is inherently of unknown content/nature, so very much
something liable to make people paranoid.

Can't see why - just extracting the content poses no more risk than
downloading the individual files. Its what you do with the files next
that matters.

I think that the problem would be with self-extracting zip files. I know
that these "unzip" when you double-click on them, which in itself isn't
an issue. However, it is possible to run an installer at the same time.
This is from "Self-Extracting Zip Files for Software Installation" at
http://kb.winzip.com/kb/entry/182/ winzip webpage.

"When someone runs it, the self-extracting Zip file will use the TEMP or
TMP environment variable to create a temporary folder, unzip the files
into the folder, run the setup program, wait for it to complete, then
delete the temporary folder created in the first step."

Detailed info using a different package can be found he
https://stackoverflow.com/questions/27904532/how-do-i-make-a-self-extract-and-running-installer/27905551#27905551

--

Jeff

On 26/04/2018 13:16, Jeff Layman wrote:
On 25/04/18 12:35, John Rumm wrote:
On 25/04/2018 01:08, wrote:
On Tuesday, 24 April 2018 18:35:58 UTC+1, John Rumm wrote:
On 24/04/2018 13:35, Tim+ wrote:
John Rumm Wrote in message:
On 24/04/2018 08:59, T i m wrote:
On Tue, 24 Apr 2018 00:11:14 -0700 (PDT), tabbypurr wrote:
On Tuesday, 24 April 2018 00:47:44 UTC+1, John Rumm
wrote:
On 23/04/2018 22:52, Andrew Mawson wrote:

Happy to share the .STL - de-munge my address and email
me and I'll forward it to you

Perhaps we should host some of that kind of stuff on the
wiki?

not a bad idea

+1

Definitely a modern take on the d-i-y and helping each other
theme. ;-)

I will need to tweak the allowable file types for upload -
since mediawiki by default only allows a limited list of file
types.

What are the typical file extensions?

(or perhaps its easier to simply allow .zip and assume anything
will be zipped first)


A bad idea surely? Zipped files are used to conceal all sorts of
nefarious things.

On an open wiki sure... ours is writeable by account holders only
which limits the damage somewhat.

A zip file is inherently of unknown content/nature, so very much
something liable to make people paranoid.

Can't see why - just extracting the content poses no more risk than
downloading the individual files. Its what you do with the files next
that matters.

I think that the problem would be with self-extracting zip files.

That's not a problem, since I am definitely not going to allow them!

Archives will have to be ones that rely on you having or getting the
required software separately.

--
Cheers,

John.

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