Recommendation for a stencil frame and a squeege

[PCBprototyping]

LPKF has a patent in Europe for this pneumatic frame, they are not allowed to sell it here as it's direct copy(ZelFlex Z4P).
If somebody still buys it, it's very hard to repair it, when it fails(and rubber tube inside will fail after a few years), you need to have the right tools to make it airtight(rings, bending tool and handpress), you need to have the right softness of air tube, etc.
Mechanical frame will hardly fail.

Roughly the frame is 300x400 mm in dimensions, it will fit all the printers for framed stencils, if they are open on sides. I'll update the listing with more technical details.

Currently we have a promotion for a free stencil, if you buy it.

[SMTech]

There are 4-5 commercial stencil frame systems out there. By far the most common is the pneumatic VectorGuard* system from DEK/ASM, its slightly more expensive to implement as the stencils have a light frame on them to keep them safe & semi rigid for storage & washing. However once you stray outside of your JLC type stencil suppliers, pretty much anyone will support this format. The others such as LKPF are less common and some have restrictive licensing which affects their adoption. Another mechanical system is the Tecan Genesis, there's a second hand one here https://www.shawline.co.uk/product.php?id_product=196 quite a few people will implement that for you but Tecan is the obvious choice, tensioning hole/size location is quite critical as it tensions with two 90 degree levers, very quick, very effective but fairly heavy. We go though quite a few stencils and have both these systems (different sizes) the frames are fairly expensive to buy but in both cases we paid nothing in exchange for amortising the cost over the forthcoming stencils. They are worth having if you use a lot of stencils tho' each stencil hangs in a carboard sleeve about 6-8mm thick so there's a distinct space saving.

*There are also compatible variants including a rather complex looking mechanical version.