Here we go again . . . MK4

[Clive S]

As always an art form. May I ask did you make the grease nipple extenders if not do you have a link for them tnx.

[paulus.v]

As always an art form. May I ask did you make the grease nipple extenders if not do you have a link for them tnx.

at post #109

[routercnc]

Hi Clive,

Thanks for the kind words. I made the grease nipple extenders from a bit of brass. See post #109 in this thread. The top blocks have the right angle in, and there are 4 off. The bottom one is straight and there is only one - it is used for each of the lower bearing blocks in turn and then the block is capped off with a small bolt. You can buy straight ones, but couldn't find an angled one the right size.

The valves are M6x0.75 fine thread, very cheap off ebay. Watch out, some M6 grease nipples are M6x1.0 (ballscrew nuts I think are this size.)

My angled ones needed to be indexed so that the horizontal part would be in the right place when the vertical part was tight. Lots of ways to do it but I tightened the vertical part and then marked the radial exit location.

...
Sorry got distracted part way through typing the reply, Paulus beat me to it.

[Clive S]

You can buy straight ones, but couldn't find an angled one the right size.

The valves are M6x0.75 fine thread, very cheap off ebay. Watch out, some M6 grease nipples are M6x1.0 (ballscrew nuts I think are this size.)

Yes you are correct re the ball screw size M6x1.0 also worth noting is that if you unscrew the pip (nipple bit) out of the body that is also the same thread. In than case (although you might have done it already) if I could find a 90' nipple with the M6x0.75 thread it might be possible to take out the nipple bit and make a straight extension.