Yes, yes, do not tell me.
You can buy it in a store, but it's better :D
A cabinet module approx. 60g of PLA
A drawer is approx. 25g
Before you start printing, count how profitable you are.
Based on tests, it is strong and stable even with steel screws.
The joints are strong, but I do not recommend the pull-down load as it can break.
Prints with the best 0.4mm nozzle.
Printed with 0.3mm layer thickness.
I also tried the shell width 0.4 or 0.8mm. The latter is a bit stronger, the first few grams lighter.
No filling required.
I hope it will be useful for you!