It's imperative that the freewheel remover is securely clamped against the freewheel, otherwise it'll slip up (no pun) and you'll chip a prong.
Use the axle hut or QR to hold the remover on tightly, then put it in the vise. Turn the wheel to the left to remove, but the moment the freewheel breaks loose, stop and loosen the nut or skewer, otherwise as the freewheel moves out it'll damage the axle or skewer.
Other than that, you have it, so go ahead.
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