Originally Posted by
Joe Meirhaeghe
Baxter, looks like you've done a pretty good job making your boring bar similar to Steve Sinners. Just a couple of basic recommendations.
When your using the Rolly Munro cutter I'd take out the extra link and only use the cutter head for most turning. Only use the link when necessary to do the top shoulders then take it out again. It's just a extra stress point that's not needed while hollowing deeply into the body of the vessel.
Also have the Rolly set up to cut on center, then use a level to make sure that the bar is level. As you hollow deeper the cutter will either travel higher or lower than center line if the whole bar is not set up level & the cutter will not perform as it should if off center.
On a safty note drill a hole in the back end of the bar say 1/4" or 5/16" dia. and put a hitch pin or bolt through it when you hollow. This makes sure you don't pull the back end of the bar out of the trap while your hollowing & watching the front end. That would cause a heck of a accident.