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Place the blade in a vice protect the blade if necessary and then use an appropriate spanner on the spindle on the rear of the blade (small gap between the blade and the actual machine.). If your spanner is too thick grinde it down a tadge.
This has always worked for me.
[quote="worm"]I have a Makita 230mm 240V angle grinder. It has been in the garage for a year or more now, and I have tried to replace the disc but with no such luck!!
I thnk it may be rusted on.
Even coated in WD-40 and left to soak overnight, and a hammer bashing to loosen the disc from the plumber...still no luck
Any suggestions, as I don't want to chuck it.
Hope I am doing this right, as I have never replied on this site before but felt I must answer as I had the same problem. I found that underneath the actual disc on the shaft was a thin flat that I could get a 19 mm spanner on, (you may have to grind the spanner to make it thinner) I then put the outer disc that holds on the grinding disc in a vice and used the spanner with great success to undo the outer disc, just remember which way it has to go to undo ????