Here is where you can get reverse twist drill bits for just such an occasion:
They used to sell an index of LH twist drill bits with matching easy outs for removal of broken fasteners. You have to have a mill or high end drill press to get it to go backwards or put your belt in a figure 8. I wouldn't do that for too long.
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www.lawsonproducts.com
They used to sell an index of LH twist drill bits with matching easy outs for removal of broken fasteners. You have to have a mill or high end drill press to get it to go backwards or put your belt in a figure 8. I wouldn't do that for too long.