Another short session today of about an hour to an hour and a half. The nose is now down to slightly below 50mm in diameter after "smoothening" out the surface. The spindle was bumped up to 660 rpm with very light cut using the Sherline's carbide insert tool. The tip on this tool has radius of 0.4mm. The result was great! The flange was also squared up and finished with the same method. I realised that I've to lock down the carriage to produce a decent finish when face turning. Also, I discovered that having a small relief angle between the edge of the insert and the work helps in the finish.
|Facing the flange to square it up.|
|The surfaces feel smooth to the touch despite how they look.|
|From another angle. Should have smoothen out he face of the nose just for the fun of it.|
|The biggest piece of aluminum rod tested on the recess of the 3 jaw chuck. It is a tad too small to be made into a gauge for the recess I'm cutting on the workpiece. A trip to Kelantan Lane is now unavoidable.|
When I visit the metal shop at Kelantan Lane, I'll also be buying a thicker piece of Mild Steel stock as the material left for the flange will be a little on the thin side, unless someone tells me otherwise.
I've been thinking about how I should go about marking out the PCD of the mounting screws. Of the 2 approaches I read, the one shown on an article posted on 7x12minilathe group seems easier. The other one on Tools and Mods seems to me to be more accurate as it will be concentric to the lathe centre. Any comment?
Another question, should I be boring and making the taper hole before threading or should I do it the other way round?
Like always, have a blessed week ahead!