What I can offer as collateral is a wallet that has 2.1 btc in it.
I could extract the amount needed from it, but the wallet has a ton of small inputs to form that sum, and in order to not get a too large transaction error I need to make a ton of small transactions to get there and it takes a huge amount of time.
I need the amount faster than that for a urgent matter.
I could extract the amount needed from it, but the wallet has a ton of small inputs to form that sum, and in order to not get a too large transaction error I need to make a ton of small transactions to get there and it takes a huge amount of time.
I need the amount faster than that for a urgent matter.
If someone can tell me how I can set up 500 transaction of 0.001 in one so I don't get the error, and I don't have to do it 500 times in transaction manually, I'd be happy not to ask for anything 
I'm using bitcoin-core and the wallet dat file loaded.
I did manage to make a 0.00175 transfer with no error, but that takes me like a million years to get to the sum I need.
First: I wrote a topic on How to Consolidate your small inputs years ago. Read it I did manage to make a 0.00175 transfer with no error, but that takes me like a million years to get to the sum I need.
You're not the first, although having that many small inputs is uncommon (but not impossible). What did you do: collect faucets for years?
Anyway, in Bitcoin Core it's fairly easy to handle. First, enable Coin Control: Settings > Options > Wallet > Enable coin control features. Then, go to Send > Inputs and manually select a bunch of inputs. You can sort them on size and start with the largest one. Select for instance 100 at a time, set the lowest fee (1 sat/byte), and send the entire amount to a new address that you own. Keep doing this until you have no more small amounts in your wallet.
If you're desperate enough, I can do it for you (at a price). But it shouldn't be too difficult to do this on your own.
Don't do this! Bitcoin Core is fine, no need to switch to Electrum.