I have been using what's called a bridge for the WiFi network connection. I have two of them. Probably 10 years old by now. Ancient technology. They work but are very low power. I suffered with constant drop outs. With three computers I had to move the bridge between computers. I tried a four port switch with one of the bridges but it wouldn't work. I needed something built for the job.
I have just installed a new Netgear WiFi extender in the middle of the workshop. Here is a link to a report I wrote in Ramblin' Dan.
I have been using it for several days with both a computer LAN cable plugged into the RJ45 and also through WiFi to the extender. Both methods have produced excellent connections.
Using a device like this permits location of the extender in a great location. Not buried down in among the machinery in the shop. It is not extremely expensive at $50 and works great in a workshop environment.