Comments sought on new build: A CNC Router for RC Gliders and Planes

[njhussey]

BUGGER!!!!!!!!

Spot the snapped tap in the bed...



Close up....



Which makes the sacrificial bed look like this...



Closer...what's missing from this one???!!!!!



Any suggestions for getting the tap out in situ guys??????

[Wobblycogs]

Damn, always happens just when you don't need it. I've seen broken taps removed using a small punch or point and hammer to carefully unscrew them. Whether it will work depends how well the thread is cut I'd guess. Good luck.

[njhussey]

Damn, always happens just when you don't need it. I've seen broken taps removed using a small punch or point and hammer to carefully unscrew them. Whether it will work depends how well the thread is cut I'd guess. Good luck.

I've some bits to cut tomorrow that don't require absolute precision so ill surface the bed and then think about it.

There was a thread where someone used Alum to dissolve the tap...trouble is I'd need a big pan to simmer the bed in!!!

Ultimately it won't matter as I'll be doing the T slotted base thingy...but it's still annoying!

[JAZZCNC]

Ultimately it won't matter as I'll be doing the T slotted base thingy...but it's still annoying!

Neil are you thinking to T-slot the bed on the machine using the spindle.? IF so then you'll struggle because the spindle is far too fast for T-slot cutters.
Personally I find a matrix of tapped holes is far more versatile than T-slot and easy to do on the machine.

Sorry to see snapped tap.!! Done it my self so know how it feels.!. . . Proper B@~~rd to get out. I just pecked away at it with pointy centre punch and kind of half destroyed it untill came came apart and loosened.

[njhussey]

Neil are you thinking to T-slot the bed on the machine using the spindle.? IF so then you'll struggle because the spindle is far too fast for T-slot cutters.
Personally I find a matrix of tapped holes is far more versatile than T-slot and easy to do on the machine.

Sorry to see snapped tap.!! Done it my self so know how it feels.!. . . Proper B@~~rd to get out. I just pecked away at it with pointy centre punch and kind of half destroyed it untill came came apart and loosened.

No I'm cutting 16mm wide by 6mm deep horizontally and then putting 5mm flat strip over the top to create it....