A Positive Stop

Monday morning started off surprisingly well this week when I arrived at my workshop to find a small package waiting for me, containing a brand-new, bespoke depth stop for my Axminster ED16B pillar drill, courtesy of a good friend from the forums at The Wood Haven.

You see, after seeing this video appear through my subscription feed on YouTube a couple of months ago, I knew that something very similar would be ideal for my machine. The only trouble was finding someone who can machine something for me, as I knew I wouldn’t be able to buy this as a spare part or accessory from, well, anywhere, really… So, I removed the threaded bar, complete with the original nuts and the spring I’d added as a temporary and popped it all off in the post.

[If you’re having trouble watching that video, can I direct you straight to this review at The Wood Nerd’s website.]

A couple of days later and Bob responded with his thoughts. While the flat on the threaded rod would mean that, basically, a quick-release type button (as in the video and, as found on many modern routers) would not be practical. However, Bob still saw all the positives in having a flat like this and, while I was trying to conjure up an idea as to how someone with even a metal workshop was going to create a ‘D’-shaped hole, Bob already had a much simpler solution which was equally as effective…

This brass pressure pad serves several purposes – it protects the scale from damage, provides a positive location against the flat of the main bar and, with the lips created both top and bottom, there’s no danger of the brass slipping out of the collar, even if the Bristol lever and short length of M6 studding are removed. You can see already in the photo above where the short length of thread has already left its impression on the brass and yet, the metric scale on the rod remains unscathed.

Perhaps the only minor niggle though, is that it’s actually the brass pad that references against the casting of the depth stop casting and not the larger diameter collar. I haven’t done any extensive testing yet but, initial results show that this should be more than adequate for repeatable drilling depths. I did only send Bob the ‘essential’ parts of this mechanism and a few dimensions… He didn’t have the entire drill to work with, after all! This was an oversight (undersight?) on my part, as there is a generously-sized hole that surrounds the vertical rod. It’s only millimetres away from slipping through… But then, as I said earlier; I’m waffling on about something that’s plain irrelevant! The new depth stop works and it does its job very well. Without any of the necessary tooling, machinery or, much of a skill at working with any material other than wood; I certainly couldn’t have made this improvement on my own!

So, once again, I’m indebted to the man known as ‘9fingers’… 😉 Meanwhile, Bob’s been making some improvements to his own pillar drill and, if you’d like to take a look at that then, I recommend you click right here.

Thanks for reading.

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