Air pump from small angle grinder

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I got tired of inflating my SUP and inflatable boat with a hand pump, so I made a pump from a small cordless Jauhi angle grinder from Aliexpress (look at the second to last photo). Now it is much faster and easier to inflate the SUP. It takes around 30 seconds to inflate or to fully deflate my 3,5m long SUP. However, this is not a high-pressure pump. After the initial pumping, you need to additionally pump it with a hand pump to the required pressure. Most likely, this pump can be attached not only to the Jauhi grinder, but I have not checked (mine was the cheapest). If you want to use a different grinder, look at the photos of the cutting disc protection mount. It should look like the one on the last photo.

The pump looks like a small turbine that is attached to the grinder instead of the cutting disc and prot