Re: New member
I used to have a 405.
first thing to know is that the gearing is 20 DP. Later workshops, 415 and on are 18 DP (except for the 415 twin gears, which you the 405 does not have).
When I got my 405, it also did not have any gears except for the turning set up.
Attached is a picture of the stub gear you are looking for. I dont believe Its mine. I dont remember ever having one.
I did change my headstock over to a later side oiler one. Your oilers are not the same. In the top of the journals are small slices of felt. You should ASAP, remove the spindle and clean and replace those.
Felt is available from McMaster-Carr. The rebuild kit is not for the 405.
Now 22 DP gears are available for Boston gear. A I remember the bore and width are good. but the keyway, if needed is different.
Look for the 20 DP gears. These are only sold through distributers.
Some of the UK lathes use the same gears, If memory serves me, The Boxford did.
A quick search using “Boxford Lathe Change Gears” got me here.
Good luck with your “New” old lathe
I have Included a link to Boston gear and the gearing arrangement chart from SB.
I was lucky enough to get mine off eBay, but it took 5 years of looking.
REMEMBER 20 DP not 18 DP.