Make it extreme

=== tracked vehicle ===
https://www.youtube.com/watch?v=2EJBvW-Lh4I tracked vehicle and see How to make off road buggy Front Differential from make and ride channel 
https://www.youtube.com/watch?v=BIvoiwozm8w differential braking tank transmission
https://www.youtube.com/watch?v=LK5ix2qSzEM car jack
=== pipe bender ===
pipe bender
=== xy platform ===
https://www.youtube.com/watch?v=IeXT1B1xklQ using angle iron and box cutter blades as separators as per Jeremy Schmidt youtube channel, by Ozturkmen
https://www.youtube.com/watch?v=MwcMXOO3a5o drillpress by Ozturkmen
=== links ===
see Lathe#Diy_lathe from Homemade lathe machine uploader.
https://www.youtube.com/watch?v=dIe_6ekgyhQ cut circle with two threaded rods.
=== links ===
Machine design
Made in Poland
navin drillpress
Category:Machine design
Category:Youtube uploaders