DIY Surface grinder

**Zepeda** · 11-10-2018

Originally Posted by Robin Hewitt

No idea. Do you think it matters? I will be giving Quick Extender Pro a shot and running them in an oil bath.

Are you expecting issues when you get to fitting it all together?

**Robin Hewitt** · 11-10-2018

Assembly is easy.
I am expecting 'issues' when I grind my first, large, flat surfaces and then put them face to face with a smear of engineer's blue.
Question is, will I be able to correct it?
It is not easy to get your head around a lack of flatness and see through it to a probable cause and solution.
I will either succeed or become bored and do something else

**Robin Hewitt** · 11-10-2018

£370 worth of Japanese stepper technology arrived on Tuesday and I am still fondling it. I get a stiffy from just reading the spec sheets

**Robin Hewitt** · 28-10-2018

Not happy. Got the wrong steel for the wheel arbor, horrible to cut, tears (rhymes with hairs) and smears...

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and some chinese bloke sold me the worlds crappiest nuts at over 4 quid each

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If I put that on a thread it would rip it to pieces. They are going to cost him over 4 quid each in return postage if he makes me send them back.

Whatever.
I have bought M30x2 l/h taps and die and I am ordering EN1A freecutting leaded steel from GLR. A s/h M20 spiral flute reamer is on it's way and I am doing circuit boards to hook an STM32F407 cpu to the steppers

**magicniner** · 30-10-2018

Looking Good!

**Robin Hewitt** · 11-11-2018

Progress tortuously slow, new spindle nose in leaded steel, thread a bit raggety, will have to do.

Laying out circuit boards for the controller, just reached the DRC stage -yawn-