Homebrew_PCBs

On Fri, Sep 20, 2013 at 8:31 PM, <andrewm1973@...> wrote:

bought one of his $17 vacuum pumps to make a new frame a while ago. Looks the part but have not used it in anger yet

--- In Homebrew_PCBs@yahoogroups.com, <homebrew_pcbs@yahoogroups.com> wrote:

If anyone is looking for diaphragm pumps, such as for vacuum hold-down
of flexible PVC sheet to press a phototool to a PCB for UV exposure, or
maybe for spraying etchant, this eBay seller in Hong Kong has quite a
selection.

The seller's categorized listing is:

http://www.ebay.com/sch/haruyr_kb/m.html

but it can be hard to find the pumps. By using the search facility on
this page, for "pump":

http://stores.ebay.com/haruyr-kb/

quite a variety of pumps can be found:

http://stores.ebay.com/haruyr-kb/_i.html?_nkw=pump&submit=Search

I bought one of these:

http://www.ebay.com/itm/400569532731
Diaphragm Pump Water/AIR Pump 12V DC 400L/H 1.2MPa for Aquarium Fish tank

I haven't tried it for a PVC flexible phototool hold-down system, but I
think it would be suitable. I am only doing small PCBs and with the new
small source UV LED light source, I am happy using glass with foam
behind the PCB.

A search of eBay for "diaphragm pump" turns up 2,525 results and most of
them are too big and expensive for this application:


http://www.ebay.com/sch/i.html?_trksid=p2047675.m570.l1313&_nkw=Diaphragm+Pump&_sacat=0&_from=R40



- Robin