SK40 collet chuck mistake

Early on I made a stupid mistake by not properly engaging the collet in its nut before tightening it—the result being a collet very tightly held by its chuck and no way to remove it. Mistakes like this are pitfall of learning on my own, but also an opportunity to learn and to make tools to solve a problem. The solution I came up with was to make a split nut to engage the ejector lip of the collet, and then a separate nut to apply force against the split nut.