update on the screw cutting gearbox .
gearbox seems to be beding in nicely . have to rebuild the main screw clutch and reset that . apparently it had got a clutch but it may aswell been welded up . turned afew diffrent threads pitches all look good . will see how it goes . :D
got the barrel as a ruff blank . it has polyagonal rifling . i had to do the outer surface and the crown . and breech end 1 degree 5mm taper . so only the rifling i dident do tho i did have to polish the bore.
i love my lathe . it keeps my head happy . between the 140 and my DM25 aplne . i can make the things that i like
pre charged air rifle made of titanium and 7075a ali
just for fun
Super big massive thank you to Pete . the man is a diamond. as you pointed out pete teeth were a little on the thick side . i assembled the shaft out of the gearbox first and it was quite tight . so i stoned the shift with a triangular stone . just in case of any hidden burs . then re checked...
So ..... ermmmmmmm i dont know what to say pete and thats a first for me ....... really dont know what to say . thank you so so much . un real . so you going to pop back in the phone box and pop back now ...
i found the problem broken spring in the latch . thats fixed . tirned out a previous own thought it was a good idea to use grease in the screw cutting gearbox where is days use oil .
Am new to forum .
so my 140 harrison has a problem . in the gear selector is a little 22 tooth gear wheel as of last night it has 2 teeth missing . while cutting a screw something happend came out of gear bounced back and hit the gears . . questions 1 has anyone got a gearbox . 3 knobs across...