Editing MX mount SMK clone series

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{{infobox dswitch
| image name          = USw LMBW01 -- infobox.jpg
| manufacturer        = 
| product code        = 
| family              = 
| switch type         = Linear
| contact mechanism   = [[Contact mechanism#Metal leaf|Metal leaf]]
| switch mount        = [[Switch mount#Plate mount|Plate mount]]
}}

'''MX mount SMK clone series''' refers to a series of [[keycap mount#Cherry MX mount|Cherry MX mount]] clones of the [[SMK vintage linear]] switch from an unknown manufacturer. The switches appear to share the same moulds as [[HTK switch]] (including completely identical [[mould numbering]]), suggesting that the HTK switch tooling was sold off to another company who removed the "HTK" branding. The branding on the base appears to have been removed with an automated rotary tool, and the poor surface texture and soft edges suggest old, worn tooling.

==Design==
The design is very similar to SMK vintage linear, with several notable differences. The switch differs from the SMK vintage linear, and matches the HTK switch as follows:

*Two folds instead of one in the cross bar of the stationary terminal
*Recessed area at the base of the movable contact
*Asymmetric slider base (the SMK upright keystem slider is reversible and may have been designed to support [[DPST]])
*Plain hemispherical PCB standoffs

The circular recesses commonly found on the bottom of the switch base are missing in this clone family.

It is possible that it is related to [[USw LXBB02]], which is unbranded and has a black slider, and is depicted in the same eBay auction item.<ref name="eBay-wonderco" /> USw LXBB02 appears to have a different slider design and lacks the spiral square "branding".

==Variants==
;USw LMBW01
:Black, with a white slider
;USw LMBU01
:Black, with a medium blue slider — assumed to be Cherry MX mount as the slider dimensions appear to match those of USw LMBW01<ref name="eBay-wonderco" />

==Gallery==
===USw LMBW01===
<gallery widths=250 heights=187>
File:USw LMBW01 -- assorted.jpg                   | Assorted switches
File:USw LMBW01 -- top.jpg                        | Top
File:USw LMBW01 -- numbering.jpg                  | Numbering is the same as the [[HTK switch]]
File:USw LMBW01 -- base removed.jpg               | Base removed
File:USw LMBW01 -- Cherry MX mount.jpg            | Slider is Cherry MX mount
File:USw LMBW01 -- slider profile.jpg             | Slider profile
File:USw LMBW01 -- de-branding detail.jpg         | Apparent removal of prior branding
File:USw LMBW01 -- switch contacts.jpg            | Switch contacts
File:USw LMBW01 -- disassembled, bottom views.jpg | Disassembled, bottom views
</gallery>

====Comparison with SMK====
Comparison with a typical [[SMK vintage linear]] switch from circa 1984 (taken from an [[Acorn BBC Microcomputer]]):

<gallery widths=250 heights=187>
File:USw LMBW01 -- SMK comparison, front.jpg      | Fronts
File:USw LMBW01 -- SMK comparison, sides.jpg      | Sides
File:USw LMBW01 -- SMK comparison, sliders.jpg    | Sliders
</gallery>

==References==
<references>
<ref name="eBay-wonderco">{{volatile|eBay — [http://www.ebay.com/itm/130541363513 1 PC White Keyboard 5x5 Keys 5 Keys Metal Panel]}} Retrieved 2015-07-29.</ref>
</references>

[[Category:Unknown switches]]
[[Category:SMK vintage linear derivatives]]
[[Category:Metal contact switches]]
[[Category:List of all keyboard switches]]