Tigman
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I'm only roughing it at the moment , will take tips on board thanks
- Thread starter Kram
- Start date
Dr.Al
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- Gloucestershire, UK
I needed some reduced-diameter head screws for a fixture and, while I was at it, I made 60 of them to keep me going.
Before (above) and after (below):
It's jobs like this that make picking the right tool important: this tool was perfect as I could skim the outside diameter then move it in and right to deburr the back edge, using the cross-slide dial and the trav-a-dial for consistency:
Also helped having a mandrel that had a fairly deep over-diameter bore so that the screws are only threaded into the mandrel for about 6 mm (hence speeding up the process of putting them in and taking them out). Took me just over 1/2 hour to do 60 screws.
Before (above) and after (below):
It's jobs like this that make picking the right tool important: this tool was perfect as I could skim the outside diameter then move it in and right to deburr the back edge, using the cross-slide dial and the trav-a-dial for consistency:
Also helped having a mandrel that had a fairly deep over-diameter bore so that the screws are only threaded into the mandrel for about 6 mm (hence speeding up the process of putting them in and taking them out). Took me just over 1/2 hour to do 60 screws.
My Old Landy
Engineering Mayhem
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How many cuts or did you do it in one?
Dr.Al
Forum Supporter
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Just one pass. Move the cross slide to 0, hit the power feed, wait, release the power feed, move the cross slide in to 1.8ish, turn the carriage handle back until the trav-a-dial read 0. Rinse and repeat.
I was only taking 2 mm off the diameter.
Hood
I am obsessed.
- Messages
- 17,778
- Location
- Carnoustie, Scotland
I have DoubleTake mirrors on my bike and they come with wing nuts which are not the most secure as anyone could easily unscrew and nick them, we get a lot of tourists up this way 
I ordered some pin-lock ones from Amazon and before I bought it said they would be delivered today but as soon as I bought they said they would let me know the expected delivery by email. I still hadn't got an email last night so I cancelled them and drew some up in Fusion, I then machined and anodised them today, didn't need to make two keys but thought I might as well as they didn't take long to machine.
Fitted to the mirror with the key inserted.
Key removed once tightened.
Pic of them on the bike. The outer shells just spin so you can't undo by grabbing that and turning.
I ordered some pin-lock ones from Amazon and before I bought it said they would be delivered today but as soon as I bought they said they would let me know the expected delivery by email. I still hadn't got an email last night so I cancelled them and drew some up in Fusion, I then machined and anodised them today, didn't need to make two keys but thought I might as well as they didn't take long to machine.
Fitted to the mirror with the key inserted.
Key removed once tightened.
Pic of them on the bike. The outer shells just spin so you can't undo by grabbing that and turning.
You know it’s a tourist when your bike gets nicked and the plod recover it from the heather sans mirrors
Knowing the UK police they will recover the mirrors but not the bike
The_Yellow_Ardvark
https://www.death-clock.org/
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- Going Away.
Knowing the police they will give you a crime number and thats it.Knowing the UK police they will recover the mirrors but not the bike
Hood
I am obsessed.
- Messages
- 17,778
- Location
- Carnoustie, Scotland
I had thought of that but didn't have any Acetal to make them with except some 200mm dia bits and it would break my heart to machine that down to 30mm dia
Having said that I kind of like the look now, maybe in a few weeks I wont, who knows
My car was stolen then left in the multi storey car park opposite the law courts. I got a parking ticket for overstay.You know it’s a tourist when your bike gets nicked and the plod recover it from the heather sans mirrors
Shox Dr
Chief Engineer to Carlos Fandango
- Messages
- 18,005
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- East Yorkshire
Keep the muck oot. since its crimble, I'll swap you some 30mm for your 200mm.I had thought of that but didn't have any Acetal to make them with except some 200mm dia bits and it would break my heart to machine that down to 30mm dia
Having said that I kind of like the look now, maybe in a few weeks I wont, who knows
Hood
I am obsessed.
- Messages
- 17,778
- Location
- Carnoustie, Scotland
I think I will pass on that dealKeep the muck oot. since its crimble, I'll swap you some 30mm for your 200mm.
Shox Dr
Chief Engineer to Carlos Fandango
- Messages
- 18,005
- Location
- East Yorkshire
Hood
I am obsessed.
- Messages
- 17,778
- Location
- Carnoustie, Scotland
slim_boy_fat
Member
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- 29,508
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- Scottish Highlands
Just because we know the right side of a shilling.....
Doesn't matter which side it is because it will always be firmly held in a northerners hand,
Till death do them part.
Are they the type you just ram a large screwdriver down the side and then turn when you have lost the key?I have DoubleTake mirrors on my bike and they come with wing nuts which are not the most secure as anyone could easily unscrew and nick them, we get a lot of tourists up this way
View attachment 378588
I ordered some pin-lock ones from Amazon and before I bought it said they would be delivered today but as soon as I bought they said they would let me know the expected delivery by email. I still hadn't got an email last night so I cancelled them and drew some up in Fusion, I then machined and anodised them today, didn't need to make two keys but thought I might as well as they didn't take long to machine.
View attachment 378589
Fitted to the mirror with the key inserted.
View attachment 378590
Key removed once tightened.
View attachment 378591
Pic of them on the bike. The outer shells just spin so you can't undo by grabbing that and turning.
View attachment 378592
Hood
I am obsessed.
- Messages
- 17,778
- Location
- Carnoustie, Scotland
Won't work with these ones but once you try that a pair of mole grips could be used.Are they the type you just ram a large screwdriver down the side and then turn when you have lost the key?
I also just made this tool. It featured a tapered thread (of no particular pitch or threadform). Happens to be left-hand too but that's not significant. I'll let you guess what it's used for. It has a 22mm hole though the middle
View attachment 88822
That looks a very handy tool indeed
