After comparing a variety of limit switches online, I decide to stick with the original plan of using mechanical limit switches. There are some larger ones I found on farnell that could stand near 2 newtons of force, they are a bit more than £6 each. Without a registered account, a minimum of £20 per purchase is required, meaning I need to buy 4. Considering that, I started searching for smaller options. I have found out that Maplin have some small ones that could fulfill my need and are priced at around £1.5 each. I went to purchase 2 and will look into options of how to secure them in position. This may involve some redesigning of the backing. I am also going to extend the cover so less components are exposed.
These limit switches are normally normally closed SPDT, with the middle leg as the common. They also features two connecting holes suitable for M1 screws.
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