DIY Surface grinder

[Robin Hewitt]

Tried adding some RSJ's, not cut to length yet.

I tried cleaning them with a knotted wire brush on my angle grinder and they laughed at me.

I might need to take them over to Newhaven and get them shot blasted, getting fed up with washing my hands every 5 minutes.

[Colin Barron]

Before you spend any more time and money i would look at Dronsfield Eagle manual surface grinders (i paid £250 for mine) or Herbert made some small machines. If you have more space a Jones and Shipman 540 is best value. It may take a while for to find one on Ebay that suits your purpose. Even the small machines are 300Kg plus.

[magicniner]

What size and orientation of wheel is planned?

[Robin Hewitt]

I was thinking to use those Norton, white wheels, 6 or 8 inches diameter in 2 widths.

Rotating around the Y axis as per industry standard Jones and Shipman 540. 2800rpm.

That wheel overhang detemines the useable Y travel. I can have up to 300mm, less the wheel width, but I don't think I am quite that brave. OTOH, the more it sticks out the greater the stiffening torque on those linear bearings.

[Robin Hewitt]

My angle grinder has now burnt out trying to descale this stuff. Ordered a replacement and a bigger, slower one. More Watts, less frantic...

[Robin Hewitt]

More delays. The 9" angle grinder arrived with a broken plug and has to go back.

However I fitted the gusset plates so my Z axis now stands erect.



Thanks to the wonders of CNC the holes laser cut in the 12mm plates line up perfectly with the holes I drilled and threaded in the RSJ.

Next comes the bit I have been putting off. Boring the spindle bearing housing using my little ML10. It's 19cm long. I can't chuck it so it looks like a face plate job.

[Robin Hewitt]

Taking a bit longer than expected. I keep losing tools, screws, bearings and stuff then waiting for the postman to replenish me...