Please explain what will happen in this situation.
1) I send 2.049 BTC to ChipMixer and choose to get a a voucher.
What kind of voucher(s) I get? Is it one for 2.049 BTC or two for 2.048 BTC + 0.001 BTC?
Voucher is code for any amount of bitcoins over 1 mBTC and with 1 mBTC increments. You will get 2049 mBTC voucher.
2) Another mix, I send 2.048 BTC, also choose to get a voucher.
What kind of voucher(s) I get?
2048 mBTC voucher.
3) I want to sweep my vouchers. So I submit all of them from steps 1&2, what are my options now?
Can I specify what kind of chips I want to get? Can I choose 4.096 BTC chip now? Do I have to completely spend the whole value I have in vouchers right now (can I keep 0.001 BTC for the future mix in voucher form)?
Can I choose to make ChipMixer send me the whole 4.097 BTC to my single address in 1 tx (note, it's not a size of a chip)?
Can I choose ChipMixer to give me 1.024 BTC chip privkey? What will happen to the remainder value (3.073) in vouchers? Will I get new vouchers?
As always you pick sizes of chips you receive and you always get privkeys to your chips.
You may redeem both 2049 and 2048 mBTC vouchers and have 2 x 2048 mBTC chips and 1 mBTC chip. Then you may click "merge" at 2048 mBTC chip to swap 2x2048 for 1x4096 mBTC chip.
Everytime you click "withdraw" - you receive private key. When you click "Leave chips and get voucher" - every chip not withdrawn will be sum into one voucher.
4) If I choose to make ChipMixer send me the value I want, what fee do they use?
Automatic fee. If it matters how much miner fee is paid - please use private keys to import them yourself and pick any fee you wish.
PS How big is ChipMixer's pool? If I want to mix 100 BTCs in a month will I start getting my own BTC in a week or will they all be not the ones I deposited?
ChipMixer does not use first-in first-out queue. Chips are produced and awarded in random (as all fungible values should be) so you cannot ever be sure - but it is all well. Nobody can expect that you will get chips from your deposit.
Afaik, you can split down chips, although i'm not entirely sure if you can also *always* group/merge them together to get a higher one (I think i was unable to do so a couple times..?).
If you cannot use split option - it means that ChipMixer does not have at least 2 lower chips ie. you cannot split 1024 chip when there is only one 512.
If you cannot use merge option (and you have two of the same chip size) - it means that ChipMixer does not have higher chip ie. you cannot merge two 1024 chip when there is no 2048.
If you really need lower/higher chip - make a voucher and try again later.