Twice as Sharp Standard Scissors Sharpener

Never sharpened before. Picked up this Twice-As-Sharp from my neighbor. Just tried it on one of my kitchen knives; it definitely removed metal but knives are still super dull. Any suggestions?

WOLFF STD-98 Twice As Sharp Scissor Sharpener

Heritage Cutlery STD98 STD-98 Sharpening System – Haus of Tools

NEW Wolff Ind. Standard Twice as Sharp Scissor Sharpening System New Model

Twice As Sharp® Scissors Sharpener — Wolff Industries, Inc.

Wamery Knife and Scissors Sharpener 4-Stage. Repairs, Restores, & Polishes Blades of Any Hardness. Ergonomic Handle & Anti-Slip Safe Pads. Kitchen Knife Sharpener. Sharpening Tool for Knives & Shears.: Home

How to Sharpen Scissors - Work Sharp Sharpeners

Wolff Corru-Gator Professional Scissor Corrugating Machine – ProSharpeningSupply

Sharpen Different Kinds of Shears on the Twice as Sharp®