Some scattered works 15 years ago were done with part-time help. Now I look back. At that time, I had some ideas, but many of them were immature and in a state of half understanding. The main ideas were different from how to do them. The internal logic is why I used this form and did not think so much about how to do it more coherently. Now I have done more but I don't understand it, sometimes the design will be self-doubt and self-denial, because often the design that you think is OK may not be selected, but the plan that may make up the number will be selected. None of these estimates were later put into production because they were not seen on the market.

8 inch AC electric drill

mixing drill

long handle angle grinder

Spitter 1

Spitter 2

Angle grinder 1

Angle grinder 2

Brush 1

Brush 2