biker55 Report post Posted July 22, 2018 Hello all, purchased a used swivel knife on ebay a couple of years ago. how do I determine what size blade it needs. I also would like to know when does the blade need replacing. Thanks Quote Share this post Link to post Share on other sites
Rockoboy Report post Posted July 23, 2018 All I can think of would be the size of the shaft. Measure that with vernier calipers and get the blade that is identical. As for the profile, size, shape etc of the blade ... that's entirely up to you and the job, effect etc you want to achieve. IMHO, other than changing to a different blade for a different job, effect etc, replacing a blade would only need to be done when the blade becomes damaged or so worn that re-profiling and/or sharpening is not possible, which might be never. Maybe somebody who actually knows what they are talking about will be along soon. Quote Share this post Link to post Share on other sites
