NGLJ
Member
Thanks Kevin. I was referring to material for blanks to turn. However, your tip about Delrin is useful. Alumilite seems to be much preferred for making your own blanks.
Looking into taking the next step - kitless pens
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rixstix
Member
Any of the Polyester Resins can be a beast to thread and/or turn. Many of the advertised Acrylics are OK. Kirinite is OK. Sometimes you get a polyester blank labeled as an acrylic.
I made it a mission on my part to turn and thread polyester with minimal hiccups and it can be done but I always leave enough to correct and OOPS or AwShucks moment. I am using a metal lathe so that makes a huge difference with my personal mission.
I had a machinist friend show me the benefit of extremely sharp tools which I will never master in my remaining years. His bit sharpening cut my fingers worse that a new single edged 0.008" single edged razor blade. He proceeded to show me a 0.010 cut/0.020" overall diameter reduction per pass on a RhinoPastic black without blowing anything up.
I made it a mission on my part to turn and thread polyester with minimal hiccups and it can be done but I always leave enough to correct and OOPS or AwShucks moment. I am using a metal lathe so that makes a huge difference with my personal mission.
I had a machinist friend show me the benefit of extremely sharp tools which I will never master in my remaining years. His bit sharpening cut my fingers worse that a new single edged 0.008" single edged razor blade. He proceeded to show me a 0.010 cut/0.020" overall diameter reduction per pass on a RhinoPastic black without blowing anything up.
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NGLJ
Member
Thanks Rick. I have already had my Poly Resin challenge! I can get a thread but it is very fragile. If you have any tips I would be grateful. I envy you with the metal lathe. Even if I bought one, and all the bits to go with it, I don't have anywhere to put it. So, I am stuck with the wood lathe, and its limitations. I have had good success with most Acrylics, and recently tried Alumilite, which worked out OK.
rixstix
Member
Trust me, the cost of the lathe is the least of the expense. HSS hand ground bits will outperform the carbide insert bits, though I use my share of carbide inserts.
Threading PR on a wood lathe borders impossible IMO but I am nowhere near expert. On my metal lathe, I have a tenon diameter from many trials & can be fragile. Threading uses lots of lube & only a few degrees of cut/backoff at a time. Untraditionally, I use m9.5/.80 tap/die (actually 3/8" 32tpi UNEF) but it's easier to call it metric for sections.
Alumilite is like butter but I'm in the minority of those who like seeing long streams off the lathe. They're so light that they bypass the cyclone prefilled on the dust collector.
Threading PR on a wood lathe borders impossible IMO but I am nowhere near expert. On my metal lathe, I have a tenon diameter from many trials & can be fragile. Threading uses lots of lube & only a few degrees of cut/backoff at a time. Untraditionally, I use m9.5/.80 tap/die (actually 3/8" 32tpi UNEF) but it's easier to call it metric for sections.
Alumilite is like butter but I'm in the minority of those who like seeing long streams off the lathe. They're so light that they bypass the cyclone prefilled on the dust collector.
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NGLJ
Member
Finally a complete pen all from the same material. Since my last posting I have been trying to make a complete pen using Poly Resin. The upshot after using 20 blanks is that I have made several decent desk pens. I hesitate to say that anything is impossible, especially here, but Poly Resin is not user friendly for making bespoke pens for several reasons, which I am sure are well known here! It does polish very nicely. So, I switched to Acrylic, and attached is the completed pen. The 2 sizes that I used are M7 and M10 to create a fairly slim pen. I am not completely happy with the alignment of the cap and body, which is no doubt to some extent due to not using a tailstock die holder. Will need to negotiate with the "home boss" 
. I am going to try some Alumilite next, which I believe is quite user friendly for this purpose.
. I am going to try some Alumilite next, which I believe is quite user friendly for this purpose.Attachments
Sugar Creek Pen Co.
Member
Alumilite works very nicely for this type of project.Finally a complete pen all from the same material. Since my last posting I have been trying to make a complete pen using Poly Resin. The upshot after using 20 blanks is that I have made several decent desk pens. I hesitate to say that anything is impossible, especially here, but Poly Resin is not user friendly for making bespoke pens for several reasons, which I am sure are well known here! It does polish very nicely. So, I switched to Acrylic, and attached is the completed pen. The 2 sizes that I used are M7 and M10 to create a fairly slim pen. I am not completely happy with the alignment of the cap and body, which is no doubt to some extent due to not using a tailstock die holder. Will need to negotiate with the "home boss"
NGLJ
Member
For this kind of project using Alumilite is "heavenly" compared even to Acrylic, which is infinitely better than Poly Resin! It threads and drills very well. I have turned home-made Alumilite blanks before when making a kit pen but not kitless. My pen material supplier makes some nice, but expensive, Alumilite blanks. I have made some 9" round Alumilite blanks, specifically for kitless, but haven't used any yet.