Making a toolpost grinder for the lathe

[@user-rl8yd4hb3r]

👍 You can't expect better finishing. It depends on the running accuracy of grinding spindle and its bearings , vibrations , wheel grit , dresser used etc.,. It should have minimum P4 (ABEC class7) accuracy.

[@donepearce]

You should reverse the direction of either the lathe or the spindle. At the moment they are subtracting from each other.

[@LinkwaySwiss]

Nice Video

[@car9167]

surface looks rough. Did you dressed the grinding wheel with a diamond first?

[@machinesfromscratch]

No i will have to make a jig first so i can mount the dressing diamond on the lathe i also think that that would get mi a better surface finish i also want to try out some different grinding wheels because aus the one i used is of unknown origin

[@bertot8466]

great work, can you insert the links to buy the products of this project? Thank you

[@machinesfromscratch]

I cant remembre where i bought the spindel but it was just a generic dc spindel from aliexpress

[@Stefan_Boerjesson]

Right or wrong but if the grinder runs in right turn, like when drilling, the lathe should run in reverse.

[@seansysig]

When you grind on the lathe cover your lathe ways as grinding dust is abrasive!

[@machinesfromscratch]

Yes i will have to make some better covers that just a towel and i also need to make some sort of vacuum system for it to get rid of the dust

[@basilstadnik1342]

странно , я думал поверхность будет более зеркальная после шлифовки

[@fearlyenrage]

sicher e Schwizer wie ich ^^

[@sinchrotron]

Looks like shaft deflecting

[@machinesfromscratch]

Thats very posible especialy because the gringing wheel was fild up so much withe gunck so it probablie was not cutting properley

[@thigtsquare950]

Those artifacts in the final piece look like something is not well balanced either the spindle (which is highly unlikely) or the grinding wheel. You probably have to get a larger shaft for the grinding wheel. The one you re using is good for a Dremel kind of die grinders 1/8” (3mm). Find the largest arbor you can find for your collet; should you make it yourself, turn it between centers (there is always a first time).