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- Nov 27, 2012
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- 7,912
This was originally posted in post #16 here. Posting the information here to find it easier.
I have a PM1236 & it also doesn't list 27 TPI or 11.5 TPI. A while back I wanted to figure out how to cut 11.5 TPI. Looking at the chart on my lathe I figured that I simply needed a 23T gear which was not included with my lathe. I never ended up trying to locate one cause I found something else.
Member ftl on HSM (I wanted to mention to give him credit) created 2 documents that listed every single possible thread that could be cut on a PM1236 with the stock gears. Sadly the DL links were expired so scouring the net for those 2 PDFs, to my surprise someone had uploaded them here on H-M in a post.
I haven't verified if the PDFs are accurate but they seem to be. And if they are (hopefully) they are absolutely invaluable to anyone with a PM1236. In the "All_Pitches" PDFs it shows change gears & QCGB combinations that will allow you to cut pretty much any thread pitch you could ever want...and then some. In it shows 27 TPI & most importantly for me 11.5 TPI (if I ever want to make some garden hose fittings or large pipe thread but I don't have a taper attachment).
The docs are in the post that I linked to but I'll upload them here too (I renamed the files though to better describe them)
I have a PM1236 & it also doesn't list 27 TPI or 11.5 TPI. A while back I wanted to figure out how to cut 11.5 TPI. Looking at the chart on my lathe I figured that I simply needed a 23T gear which was not included with my lathe. I never ended up trying to locate one cause I found something else.
Member ftl on HSM (I wanted to mention to give him credit) created 2 documents that listed every single possible thread that could be cut on a PM1236 with the stock gears. Sadly the DL links were expired so scouring the net for those 2 PDFs, to my surprise someone had uploaded them here on H-M in a post.
I haven't verified if the PDFs are accurate but they seem to be. And if they are (hopefully) they are absolutely invaluable to anyone with a PM1236. In the "All_Pitches" PDFs it shows change gears & QCGB combinations that will allow you to cut pretty much any thread pitch you could ever want...and then some. In it shows 27 TPI & most importantly for me 11.5 TPI (if I ever want to make some garden hose fittings or large pipe thread but I don't have a taper attachment).
The docs are in the post that I linked to but I'll upload them here too (I renamed the files though to better describe them)