makerbot z18 heatbed (heat bed)

I really like my printer but it has a huge drawback, it doesn't have a heated bed. So as a student who doesn't have a lot of money I thought about how I could create a heated bed system myself with as little work as possible. After a little research, I purchased the following products, put them together according to the instructions and voila! The bed works. After that I designed a box for the electronics that would be nice and compact, an adapter for the bed, an adapter for Z offset calibration. And there is a heated bed!!
The cost of the project is not that high, think for yourself..
Sending links to AliExpress, buy them, connect according to the guide there and work.
Regarding a power supply, I took one that I had left at home, and it is overkill, if you have a power supply that provides 200 watts, use it, everything is fine.
I also post STEP files if you want to edit freely.

BOM:

controller 24V
https://www.aliexpress.com/item/1005004486720939.html?spm=a2g0o.order_list.order_list_main.54.74ef1802sAFuOi

mosfet 24V
https://www.aliexpress.com/item/4000401514029.html?spm=a2g0o.order_list.order_list_main.59.74ef1802sAFuOi

Heatbed (make sure that you pick the right size and right voltage, i took 24V 310*310))
https://www.aliexpress.com/item/4000772956637.html?spm=a2g0o.order_list.order_list_main.64.74ef1802sAFuOi

thermistor to the bed
https://www.aliexpress.com/item/1005003200523753.html?spm=a2g0o.order_list.order_list_main.15.74ef1802sAFuOi

thermal paste (to the thermistor, i dont know if nursery)
https://www.aliexpress.com/item/1005001774971166.html?spm=a2g0o.order_list.order_list_main.5.74ef1802sAFuOi

PSU - COSEL PLA600F-24V

1. Power switch
   https://www.aliexpress.com/item/32615866151.html?spm=a2g0o.order_list.order_list_main.44.74ef1802sAFuOi

7, also you need sone bolts and nut, (4X m4-18mm , 4X m4-nut, 4X m3-12, and some screws to close the electrical cabinet

Tools:
Screw driver with Allen head.
soldering iron
flux
Super glue
3d printer (to print all tohse stuff)
Patience because a student planned everything here

The installation is a bit tricky, there may be a lot of play at the stage of placing the bed on its mounts, but little by little you will succeed.

On the Z OFSSET adapter you need to stick some coin or something metallic, I stuck a cent.

When I'm done I'll post all the relevant photos!