I also have the Mafell spindle, 43mm mount and had the same problem, I figured equipment engineered and designed so well cannot have a simple ‘bolt too long’ problem. I removed the 25mm bolt and noticed grey dust around the thread which I assume is residue from tapping. So I removed the mount and extracted a cloud of dust with a cotton bud.
I decided to tighten the bolt with the spindle flat on the workbench, blob of grease on the bolt and used a length of copper pipe as leverage on the Allen key, It took several 1/4 turns and the spindle was still way too loose. I was sure the mount would crack before it completed and the sound from the bolt was horrendous, but suddenly a final turn and the spindle went from loose to rock solid. So a couple of turns back, removed spindle and re-installed the mount. Only took a couple of 1/4 turns and the spindle was locked again.
So fear not and persevere. The bolt is not too long, will not bottom out and does not require washers!
I also have the Mafell spindle, 43mm mount and had the same problem, I figured equipment engineered and designed so well cannot have a simple ‘bolt too long’ problem. I removed the 25mm bolt and noticed grey dust around the thread which I assume is residue from tapping. So I removed the mount and extracted a cloud of dust with a cotton bud.
I decided to tighten the bolt with the spindle flat on the workbench, blob of grease on the bolt and used a length of copper pipe as leverage on the Allen key, It took several 1/4 turns and the spindle was still way too loose. I was sure the mount would crack before it completed and the sound from the bolt was horrendous, but suddenly a final turn and the spindle went from loose to rock solid. So a couple of turns back, removed spindle and re-installed the mount. Only took a couple of 1/4 turns and the spindle was locked again.
So fear not and persevere. The bolt is not too long, will not bottom out and does not require washers!
Brilliant piece of engineering!