What are you machining?

[Hood]

...... flipped the part and clocked it carefully to 0.8thou runout and 15 um on the face. Happy with that...

 

[Kram]

Lump of cast iron arrived. Used holesaw to keep dust to a minimum.

 

[Kram]

Bored out to 36mm. The light from lidl is excellent, other than needing some tape or a shroud around the tip

 

[Kram]

Spindle out! Tight bearing took a lot of heat and hitting.

Now, how do I get it back in?

 

[Hood]

Spindle out! Tight bearing took a lot of heat and hitting.

Now, how do I get it back in?

Bigger hammer
Seriously though, make up a puller of some sort, if it is the outer race then it can be as simple as a couple of washers and some screwed rod.

 

[brightspark]

Bigger hammer
Seriously though, make up a puller of some sort, if it is the outer race then it can be as simple as a couple of washers and some screwed rod.

then heat the case and put the bearing in the freezer and get it wound in quick may need some drilled plate either side as washers may bend

 

[The_Yellow_Ardvark]

Bigger hammer
Seriously though, make up a puller of some sort, if it is the outer race then it can be as simple as a couple of washers and some screwed rod.

I have big hammers

 

[Hood]

then heat the case and put the bearing in the freezer and get it wound in quick may need some drilled plate either side as washers may bend

When I was saying washers I was meaning washers like we use for pulling in cutlass bearings on boats, usually made from 20mm thick plate

 

[Hood]

I have big hammers

I would never have known, never seen it mentioned before

 

[Kram]

Getting back in shouldnt be hard, the rear race can be pressed using the spindle nut and spacers.

Difficult part will be removing the inner bearing races, but thats for next tlweek when I swap new bearings. Now to file down rough part of casting, regrease rollers and reassemble with spacer tube, which is a perfect 72.05mm fit.

 

[Hood]

BTW you probably know this already but if not then a good way of getting outer races removed from a bore is to run some weld round the inside of them. Let it cool a bit and the weld contracts and they drop out. Obviously no use if there is delicate parts nearby but...

 

[Kram]

Im not trying that anywhere near the headstock Id end up welding the races in.

Did I say perfect fit? It wouldnt be the second time this week Ive forgotten to zero callipers, I was about 0.8mm off. While I dont like to trust them, they are spot on measuing my guage blocks. Ive discovered the sadle rack on lathe is reading 74mm for 73.23mm which is a fair amount of error. I'll finish my saddle stop soon, so I can mount a calliper to it.

Using up a peice of my cast aluminium and it turns much better than I remeber. It is porus, but it chips of nicely in little C shapes instead of curly pube mess. Plus I can take decent 3mm doc in it

 

[Kram]

********. Its not my measuring, it moves!

I previously noted the bearing seats appear to be pressed into the casting, rather than direct in the casting. Luckily there is a shoulder and the bearings are up against it correctly.

So now I have these extra parts, they appear redundant. They are identical with the recessed side outwards facing bearing.

What are they for?

 

[grim_d]

Some of the training rigs at work are missing some bits and I'm finally getting round to making them.

1 5/8” - 12UNJ castellated nut.

Great practice with the dividing head. The hex ended up about 20 thou under though because some idiot forgot to divide his finish pass by two.

 

[pressbrake1]

Made some bits for a knife maker who is making his own linisher

 

[pressbrake1]

Didn’t have any 6” round so had to chomp a bit out of square stock which broke my heart, but not as much as buying some in specially for the job
Used my big 1942 monarch just for sport

 

[Maker]

Any chance we'll get pictures of the finished linisher?

 

[pressbrake1]

Any chance we'll get pictures of the finished linisher?

Unlikely
Unfortunately if it works as should production will be outsourced to China.
Ive been making prototype stuff for him for 9 years and I still dont get to see the complete drawings

 

[slim_boy_fat]

Ive been making prototype stuff for him for 9 years and I still dont get to see the complete drawings

Compartmentalisation - he doesn't trust anyone not to dive in ahead of him and Patent the thing(s). No-one gets to see the whole story....

 

[pressbrake1]

Compartmentalisation - he doesn't trust anyone not to dive in ahead of him and Patent the thing(s). No-one gets to see the whole story....

Some years ago I sent a design to a Landrover chassis manufacturer.
They said they were too busy.
Several years later I was watching a action film and saw my chassis in action. I was slightly annoyed and still am.
I understand his paranoia