The wind, like always here, was crazy and I apologize for the noise when it got really gusty.
Grafting Tool Review - Unboxing video
After the video I noticed paint coming off the blades. This could be a place where corosion could occur but keeping the blades clean, and stored with a light coating of oil should extend their lifetime if used sparingly. If it becomes your workhorse you may be dulling and changing blades frequently enough that the paint flecking off won't be an issue.
The polymer frame, although plastic, should be fine over time, especially if you keep it out of the sun. Although, this tool might not be an heirloom for your grandkids like the grafting knife, with care and a supply of replacement blades it just might be one you can pass down to your kids. It should also speed up your process in the years to come.
Like in the previous post, I highly recommend you bring your own knife to the grafting workshop, and to have for future use. These tools are the real deal and should provide many future trees to be done.
Grab your own grafting tool here. This is the exact product I ordered and reviewed in the video.
Grab some Parafilm like I recommend in the video, and these other tools and supplies to do more grafting after the class.
We'll see you at the grafting class!