How I almost set fire to my garage...

[JAZZCNC]

Jim I'd strip it just to be safe better spending 60mins and £1 worth of grease than 2 weeks waiting and £150 for new spindle or even £80 on bearings.
Like Jon says there's nothing to it other than plucking up the balls to do it.!!

Wouldn't worry to much about the annealing has while it could have I doubt it did because it didn't fire up and the amount of heat required to anneal would have set the wood on fire.!!

[Jonathan]

Wouldn't worry to much about the annealing has while it could have I doubt it did because it didn't fire up and the amount of heat required to anneal would have set the wood on fire.!!

Yeah, to be fair I think you're right. According to wikipedia(!) the annealing temperature for steel is between 260°C and 760°C, depending on the grade, so if you compare that to the autoignition temperature for oak, which is around 250°C applied for 5 mins...it's probably fine.

[JAZZCNC]

Yeah, to be fair I think you're right.

It has been known from time to time.!. .

[JAZZCNC]

Back to the Potential fire and E-stop then I've seen Larger machines use a Rope E-stop with rope that runs around the machine that can be pulled from anywhere on the machine and activate the E-stop.!!

Oh by the way I'd already seen these pics fews weeks ago and asked Jim if he'd please post because it's important to show just how powerful and potentially dangerous even small machines can be.
I see it often people saying " Not botherd about E-stop because the steppers will stall or spindle will stall " or " I'll just switch it off at the wall" but they don't realise the full power even medium torque steppers can have when attached to ballscrews or how like a startled rabbit your froze on the spot for what seems like minutes but is nano seconds and by the time your brains recovered from the shock and told your arm to do something it's all just too late.!!
It's not until you actualy have some thing like this happen or see stationery 12mm cutter punch a hole thru 30mm of bed like it was punching butter do you stand back and say "OH SHITE".!!

So thanks for sharing Jim and Boy's he deserves some Thank's so get clicking. .

[cncJim]

Back to the Potential fire and E-stop then I've seen Larger machines use a Rope E-stop with rope that runs around the machine that can be pulled from anywhere on the machine and activate the E-stop.!!

Oh by the way I'd already seen these pics fews weeks ago and asked Jim if he'd please post because it's important to show just how powerful and potentially dangerous even small machines can be.
I see it often people saying " Not botherd about E-stop because the steppers will stall or spindle will stall " or " I'll just switch it off at the wall" but they don't realise the full power even medium torque steppers can have when attached to ballscrews or how like a startled rabbit your froze on the spot for what seems like minutes but is nano seconds and by the time your brains recovered from the shock and told your arm to do something it's all just too late.!!
It's not until you actualy have some thing like this happen or see stationery 12mm cutter punch a hole thru 30mm of bed like it was punching butter do you stand back and say "OH SHITE".!!

So thanks for sharing Jim and Boy's he deserves some Thank's so get clicking. .

Thanks jazz, I was (am!) amazed how powerful my steppers/ballscrews are. I tried putting all my weight on my machine and couldn't see much movement at all so seeing the machine bend as much as it did was a big surprise!

[EddyCurrent]

Back to the Potential fire and E-stop then I've seen Larger machines use a Rope E-stop with rope that runs around the machine that can be pulled from anywhere on the machine and activate the E-stop.!!

I've install many a mile of trip wire on conveyor belt systems, it used to make great washing lines for my Mother too.

[cncJim]

So I have finally got round to taking my spindle apart to check the bearings and I am a bit stuck...

All has come apart fine except for the black part that connect to the main silver body. I have removed the screws but it will not budge

Any ideas?
(I will try and post some pics tonight)

Jim

[Jonathan]

All has come apart fine except for the black part that connect to the main silver body. I have removed the screws but it will not budge

That's the bit the water hoses and connector go into? If so then it will come off after removing the screws, however they can just be tight. If there's any gap between the black part and the water jacket you may be able to carefully tap a flat screwdriver in and pry it off. If that doesn't work you'll have to try something more imaginative, possibly involving a hammer...
Watch out for the O-rings beneath the coolant hose barbs - you don't want to loose them.