I bought a chuck from these people recently, they may do a key by post if they have one.
http://www.jayceetools.co.uk/
mick
http://www.jayceetools.co.uk/
mick
Mortiser - Help Needed, Please
- Thread starter OPJ
- Start date
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9fingers
Established Member
OPJ":2351nr7g said:Well, whaddya know, there is one more thing where I could do with some help... :roll:
I just set the machine up to cut some test mortises. No smoke, the motor's running fine. But, as the bit engages with the wood and I try to apply downward pressure, the handle keeps moving but 'disengages' from the headstock.
This grub screw, below, secures the collar to the shaft. What happens is that this collar/screw keeps slipping.
If you look closely, you'll also see there's a roll pin going through it as well.
Here, is the grub screw on its own. Apologies for the photos but, does it look a bit worn at the end?
I'm confused as to why there's a roll pin in there as well as a grub screw...?
I should have checked this :roll: but, do you think it's possible the pin had snapped when the machine was last used? Actually, I did have a similar problem with my Fox mortiser and that was what had happened.
Hi Olly, The grub screw is just fine. It is called a Dog point set screw and is meant to have that serrated end.
As for the roll pin - it is a shear pin designed to let go if the machine is overloaded and it looks like it has sheared and you need a new one.
hth
Bob
OPJ
Established Member
Thanks, Bob, that's what I had assumed with the roll pin based on past experience. I did have a small bag of pins that I gave away with the Fox mortiser - I knew I should've kept half of them!! :roll:
It's going to be a right bugger to get it out of that tight space without dismantling everything. I don't want to start dismantling the headstock again as I've finally got everything set 'just right'! :?
I'll let you know how it goes in a couple of days. I might also have some measurements for you as well, if I can remember! :wink:
It's going to be a right bugger to get it out of that tight space without dismantling everything. I don't want to start dismantling the headstock again as I've finally got everything set 'just right'! :?
I'll let you know how it goes in a couple of days. I might also have some measurements for you as well, if I can remember! :wink:
OPJ
Established Member
Today, I finally got round to sorting out this mortiser. Replacing that one roll pin could've been much easier - I spent over an hour hitting the thing but, it just wouldn't go all the way through! :x In the end, I had to remove the shaft and everything inside the unit so that I could get a good look at it.
I don't know how well you can see this in the above photo but, the hole where the pin had snapped was clogged up with so much s**t it was almost as if the last third of this pin had been welded or soldered in! :shock: (You can see where the old pin is sticking out, behind.) I bit of delicate work with some punches in my "metalworking vice" [read: pillar drill vice
] was enough to clear the way.
This did give me a good chance to clean and lubricate these parts, which I couldn't be bothered with before! :wink:
I'm also pleased to add that the only casualty of the day was this T-handled allen key, which I had to use in place of my punch at one point, which was too short.
After re-assembling the headstock, I was happily cutting ½in. mortises in a scrap of 3in. beech. 8)
Actually, I'm still not quite happy with the vertical movement of the headstock. Before I removed it so that I could gain better access to that rogue pin, I (somehow?!) had it set up beautifully; the action was smooth and without stutter. There seems to be a very fine tolerance between getting these dovetail slides set so they're not too tight but, at the same time, they don't allow the head to slop about. With my garage door rattling in the wind all day, I didn't have the patience today to get this set up as I would like. I hear tomorrow is set to be a calmer day though...
I did initially try cutting with my 5/8in. chisel but, that one seems to be a bit of a screamer in this machine - I think it's to do with the RPM of the motor (which is much higher than my old Fox machine) and the force required to drive the auger and chisel. Thankfully, I don't use this size that often!
The depth stop (not photo'd, sorry) could be better. As with my previous machine, it's very easy to apply too much force and move its position - it's basically an M6 Bristol lever clamping to a solid bar. For two-years, I worked on a Muller machine where we 'set the depth' by marking the chisel with a felt tip pen - I think I can manage just fine with this machine!! :wink:
A big thanks to Bob in particular and also to everyone else who has commented on this thread (...yes, and to those of you who've been following in silence! :wink.
(...Damn, I must remember to take those measurements of the slots!! :x)
I don't know how well you can see this in the above photo but, the hole where the pin had snapped was clogged up with so much s**t it was almost as if the last third of this pin had been welded or soldered in! :shock: (You can see where the old pin is sticking out, behind.) I bit of delicate work with some punches in my "metalworking vice" [read: pillar drill vice
] was enough to clear the way.This did give me a good chance to clean and lubricate these parts, which I couldn't be bothered with before! :wink:
I'm also pleased to add that the only casualty of the day was this T-handled allen key, which I had to use in place of my punch at one point, which was too short.
After re-assembling the headstock, I was happily cutting ½in. mortises in a scrap of 3in. beech. 8)
Actually, I'm still not quite happy with the vertical movement of the headstock. Before I removed it so that I could gain better access to that rogue pin, I (somehow?!) had it set up beautifully; the action was smooth and without stutter. There seems to be a very fine tolerance between getting these dovetail slides set so they're not too tight but, at the same time, they don't allow the head to slop about. With my garage door rattling in the wind all day, I didn't have the patience today to get this set up as I would like. I hear tomorrow is set to be a calmer day though...
I did initially try cutting with my 5/8in. chisel but, that one seems to be a bit of a screamer in this machine - I think it's to do with the RPM of the motor (which is much higher than my old Fox machine) and the force required to drive the auger and chisel. Thankfully, I don't use this size that often!
The depth stop (not photo'd, sorry) could be better. As with my previous machine, it's very easy to apply too much force and move its position - it's basically an M6 Bristol lever clamping to a solid bar. For two-years, I worked on a Muller machine where we 'set the depth' by marking the chisel with a felt tip pen - I think I can manage just fine with this machine!! :wink:
A big thanks to Bob in particular and also to everyone else who has commented on this thread (...yes, and to those of you who've been following in silence! :wink
.(...Damn, I must remember to take those measurements of the slots!! :x)
