My Dad always said to take your time and use the right tool. For years I've been making do with a section of split PVC pipe as a make-shift fork seal driver. I do more than my share of '86-87 fork rebuilds, so I finally sprung for a Motion Pro 37mm driver and now wonder why I waited so long.
This $40 driver is really well made, well designed and makes the job quick and precise. Highly recommended.