Rolly Munro Hollowing Tool

[Vic Perrin]

Hi, I am just enquiring as to if anyone has ever modified a Rolly Munro Hollowing tool to take the round style flat carbide cutting discs.

Regards

Vic

 

[chipmunk]

Hi Vic,
If you're thinking of doing this, have you considered using a second shaft - such as the one from the Big Brother?

http://www.axminster.co.uk/straight-stem-for-big-brother-system-2-prod884964/

These are pretty cheap from Axminster and, although the step is already tapped M6, it is quite long and could be easily shortened and re-tapped to take a different thread for your carbide cutter.

HTH
Jon

 

[Vic Perrin]

Hi Vic,
If you're thinking of doing this, have you considered using a second shaft - such as the one from the Big Brother?

http://www.axminster.co.uk/straight-stem-for-big-brother-system-2-prod884964/

These are pretty cheap from Axminster and, although the step is already tapped M6, it is quite long and could be easily shortened and re-tapped to take a different thread for your carbide cutter.

HTH
Jon

Cheers Jon,
That's certainly one idea I will look at. The Munro Tool is my mates and he has not been happy with the cutters for some reason. He had a go with the carbide tipped tools that I had made and wants me to try and convert his Munro tool.

Regards

Vic

 

[paulm]

Hi Vic, I did the same as Jon suggested, a new shaft would only cost about a tenner if the BB one is used, or a bit less if you buy the steel.

Cheers, Paul

 

[paulm]

Not to overlook the obvious, which I did in my earlier reply (!), you could just grind a flat on the opposite end of the existing bar and tap a hole, leaving the original end unharmed.

Cheers, Paul

 

[Vic Perrin]

Not to overlook the obvious, which I did in my earlier reply (!), you could just grind a flat on the opposite end of the existing bar and tap a hole, leaving the original end unharmed.

Cheers, Paul

Thanks Paul,
As I said, I am going to do this for a mate , I like the idea of turning the bar around, I will have a look at it when he brings the tool over to me.

Regards

Vic

 

[duncanh]

If you're friend wants the part holding the carbide to be articulated like the original Munro head don't modify the original head as the Munro tool is great and worth persevering with. Just buy a couple of short lengths of steel bar and make your own articulated head. I have several for different bars and tips - you just need a hacksaw/angle grinder, drill and taps.

Once he gets the hang of it the Munro tool should be better to use than an unguarded carbide tip as you can cover most of the cutting edge and make it much less grabby.

 

[cambournepete]

The Munro Tool is my mates and he has not been happy with the cutters for some reason.

The standard cutters are great for wet wood. If he's trying to use it on dry wood he needs the alternative cutters with a steeper angle.
It could also be that he has it set too aggressively - i.e. to try to take shavings which are too thick.
Like any of these tools it needs setting up properly and it takes practice to be able to use it properly.

 

[Vic Perrin]

The Munro Tool is my mates and he has not been happy with the cutters for some reason.

The standard cutters are great for wet wood. If he's trying to use it on dry wood he needs the alternative cutters with a steeper angle.
It could also be that he has it set too aggressively - i.e. to try to take shavings which are too thick.
Like any of these tools it needs setting up properly and it takes practice to be able to use it properly.

Hi Pete, could you explain a little more on the alternative cutters for dry wood. Where are they available to purchase from?

Regards

Vic