I've been getting U.S. appliances sent to E.U. where the voltage is doubled. I'm using autotransformers so they can work, but this isn't ideal. I do this to save money. EU retailers add their percentage on top of a lot of superior US made products, which means they add percentages on top of shipping + import taxes. Purchasing a $600 product from the U.S. can easily end up being over $1.2k here and you end up paying for shipping twice.
Anyways, I've noticed some appliances also have EU versions, which look exactly the same and weigh the same, but they clearly have different insides.
What I'm wondering is, is it feasible to modify these tools so they are naturally 220-40v? For a 2000w autotransformer so I can use a compound miter saw, these autotransformers weigh quite a bit and are massive. But when the manufacturer makes a U.S. version and an E.U. version, obviously what they are doing is not adding a whole massive auto transformer to the device. What would need to be done to convert 120v device to 240v?