So Charlie_k got me interested in making a spear. Always wanted a legitimate spear since I was a boy so after seeing him try and all the information from everyone helping I decided to give it a try. I acquired a “Viking spear head” from a website called Grimfrost that looked legit. After exhausting my luck at local hardware stores I purchased an 8ft Ash Pole from a website called medieval collectables. I watched this video on youtube: And felt confident. I got some nails and a ball peen hammer, sand paper in 60 and 100 grit and set to work. The inside taper was wonky toward the end and about 2.75inches deep. I secured the end of the pole in a chair and straddled it using my thighs to hold it tight. I figured I’d try hand sanding and if all else failed then get a belt grinder. I first attempted to sand paper over the pole but the force was wrong and kept tearing the paper. I found that Sanding from under the pole was more effective and easier on the paper itself. I cut the pieces lengthwise to conserve and better utilize inventory. I wore gloves, a mask, and had an air purifier running. I started in my basement and if I was smart I would’ve done this in my garage... After about an hour I felt I was getting close only to see that I was still about a quarter inch shy of my mark. I used an old piece of wood to hold the sandpaper on its edge to get areas with more focused sanding. I wanted to use a sharpie to paint the inside and see where the hot spots were but I couldn’t locate one so I ended up using my spit and finger... it sort of worked. Long story short I nearly gave up after two hours of failure. Then I said F this and began sanding the end smaller and eventually cutting off the wonky distal taper piece and voila the shaft fit much better. Now I seated the head onto the pole. Drilled the holes a little larger ( they were ridiculously small) and drove a nail in and out the other side. After peening (?) one side it was pretty snug and I was happy. But after peening the other side there is a little wiggle. I am unable to remove the peened nail now. It is secure for thrust motions. Thank you Charlie, and everyone who helped give feedback on this thread.