- Joined
- Aug 22, 2012
- Messages
- 4,121
Back from holiday for a week before I could scrounge some shed time.
Still it was worth it as I got a fair bit done today.
Finished all the milling and tapping in that damned block. I broke 2 more 4mm taps so I re drilled and tapped them all for 5 mm instead of 4 mm.
The eroder worked overtime and I found that it actually constricted the centre of the coil causing it to slow from friction. I turned down the armature to get more freedom and the speed virtually doubled and the coil didnt get as hot.
A win win situation, just trying to find a bright spot from all the broken taps
Here is the finished block bolted to the pivot plate with all those cursed threaded holes.
As I needed a plate for the slide to er slide on I had to cut some 10mm plate down so I faced one edge for a datum line
Then I could cut the excess off with the angle grinder and use this flat edge butted to the chuck to finish the cut side parallel. (which turned out to be the case)
Next it was the ends turn, hmm a fair bit of overhang but slow and gently and I ended up with the ends at exact (as best as I could measure) right angles.
Then of course it had to be faced off. Simple
I used a bolt turned to a point to make registration marks, drilled and bolted one, adjusted and marked and drilled a second diametrically opposite and bolted up before marking all the others.
It worked and they all lined up
Holes drilled and bolted onto the degree wheel and block.
Now I really have to decide upon whether to keep it as a gingery style gib or cut the 60' angles for a dovetail.
Dovetails will require the assistance of a mates mill that in this case I cant avoid as there is insufficient cross slide travel to cut them in my lathe.
It will end up with a fair bit of overhang that I'm hoping can be improved with the use of a machinists jack.
Still it was worth it as I got a fair bit done today.
Finished all the milling and tapping in that damned block. I broke 2 more 4mm taps so I re drilled and tapped them all for 5 mm instead of 4 mm.
The eroder worked overtime and I found that it actually constricted the centre of the coil causing it to slow from friction. I turned down the armature to get more freedom and the speed virtually doubled and the coil didnt get as hot.
A win win situation, just trying to find a bright spot from all the broken taps
Here is the finished block bolted to the pivot plate with all those cursed threaded holes.
As I needed a plate for the slide to er slide on I had to cut some 10mm plate down so I faced one edge for a datum line
Then I could cut the excess off with the angle grinder and use this flat edge butted to the chuck to finish the cut side parallel. (which turned out to be the case)
Next it was the ends turn, hmm a fair bit of overhang but slow and gently and I ended up with the ends at exact (as best as I could measure) right angles.
Then of course it had to be faced off. Simple
I used a bolt turned to a point to make registration marks, drilled and bolted one, adjusted and marked and drilled a second diametrically opposite and bolted up before marking all the others.
It worked and they all lined up
Holes drilled and bolted onto the degree wheel and block.
Now I really have to decide upon whether to keep it as a gingery style gib or cut the 60' angles for a dovetail.
Dovetails will require the assistance of a mates mill that in this case I cant avoid as there is insufficient cross slide travel to cut them in my lathe.
It will end up with a fair bit of overhang that I'm hoping can be improved with the use of a machinists jack.