On 30/04/2018 12:40, Nightjar wrote:
On 30/04/2018 10:35, dennis@home wrote:
On 30/04/2018 09:30, Nightjar wrote:
On 29/04/2018 21:11, dennis@home wrote:
...
or a resin printer..

https://www.xyzprinting.com/en-GB/pr...obel-superfine

Again, wrong materials.



Better materials in most cases...

I would have to pay to get them WRAS approved, which is not cheap.



PLA is used for food so it should be fine.
As is PETG.
I know ABS is used for drains and such but I don't know where its used
on supply pipes, they are usually polyethylene of some sort.
You can also print HIPS which should be safe.
My £200 printer will do all those and nylon, etc.

Maybe for your use you need a sintering printer using nylon powder. They
are only a few grand. 8-(

If the parts you make are fairly simple you could get a mill and make
them from aluminium billets. Small NC mills are as cheap as 3d printers.

On 30/04/2018 14:36, dennis@home wrote:
On 30/04/2018 12:40, Nightjar wrote:
On 30/04/2018 10:35, dennis@home wrote:
On 30/04/2018 09:30, Nightjar wrote:
On 29/04/2018 21:11, dennis@home wrote:
...
or a resin printer..

https://www.xyzprinting.com/en-GB/pr...obel-superfine

Again, wrong materials.



Better materials in most cases...

I would have to pay to get them WRAS approved, which is not cheap.



PLA is used for food so it should be fine.

Polylactic acid doesn't throw up any hits on the WRAS approved materials
web site search engine. That means it can't be used on potable water
supplies without somebody paying to have it approved.

As is PETG.

Nor does that.

I know ABS is used for drains and such but I don't know where its used
on supply pipes, they are usually polyethylene of some sort.

PVC and ABS are normal for commercial and industrial applications.

You can also print HIPS which should be safe....

Again, no hits on the WRAS approved materials web site.

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Colin Bignell

On 30/04/2018 17:31, Nightjar wrote:
On 30/04/2018 14:36, dennis@home wrote:
On 30/04/2018 12:40, Nightjar wrote:
On 30/04/2018 10:35, dennis@home wrote:
On 30/04/2018 09:30, Nightjar wrote:
On 29/04/2018 21:11, dennis@home wrote:
...
or a resin printer..

https://www.xyzprinting.com/en-GB/pr...obel-superfine

Again, wrong materials.



Better materials in most cases...

I would have to pay to get them WRAS approved, which is not cheap.



PLA is used for food so it should be fine.

Polylactic acid doesn't throw up any hits on the WRAS approved materials
web site search engine. That means it can't be used on potable water
supplies without somebody paying to have it approved.

As is PETG.

Nor does that.

Funny they can make bottles from it and put food stuff in it but can't
use it for water fittings.


I know ABS is used for drains and such but I don't know where its used
on supply pipes, they are usually polyethylene of some sort.

PVC and ABS are normal for commercial and industrial applications.

You can also print HIPS which should be safe....

Again, no hits on the WRAS approved materials web site.

On 30/04/2018 22:09, dennis@home wrote:
On 30/04/2018 17:31, Nightjar wrote:
On 30/04/2018 14:36, dennis@home wrote:
....
PLA is used for food so it should be fine.

Polylactic acid doesn't throw up any hits on the WRAS approved
materials web site search engine. That means it can't be used on
potable water supplies without somebody paying to have it approved.

As is PETG.

Nor does that.

Funny they can make bottles from it and put food stuff in it but can't
use it for water fittings...

It is more that nobody has seen a use for it, so nobody has paid to have
it tested for approval.


--
--

Colin Bignell