Drilling stainless bar

[penberth3]

Replace the hex grub screw with a screw hand wheel and its easy to remove an put on.

Hose clips have been suggested for holding the rotor of a PSS seal in place or to stop a prop shaft from falling out through the stern seal.

As far as I understand the pin is holding the lift keel up or down so no real load pushing the pin sideways.

Another way would be to use a drop nose pin. I made several 20mm dia to hold my 2 anchors in my stem head fitting

You're making it all very complicated.

 

[LONG_KEELER]

+1 PM me il be glad to do it

That's kind of you Dan.

If necessary, I will be in touch.

 

[rogerthebodger]

You're making it all very complicated.

Just suggesting alternative potential designs

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Some of my drop nose pins holding my anchors in the stem head fitting on the right had edge of the pic

This is a mast raising A frame pivot with the locking pins similar to the R clips the OP proposed but spring locking like giants nappy pins.

I always try to design items to be easy to make with the equipment available and easy to use.

There are always several ways to design items to perform the same function.

 

[LONG_KEELER]

Seeing that we are still in lockdown and nothing particular to do, I have had a go at drilling holes into the 20mm stainless bar following all the above suggestions and advice. I used an Argos 12v cordless drill I keep on the boat . I thought drilling holes might serve some purpose if I ever had to do it at sea. In the end, I used 3mm drills which seemed to be ok .

It took about 15 minutes to drill the first hole. I had plenty of breaks in order not to work harden. Slow speed and lots of pressure seemed to work well. I used 3 in 1 oil which seemed to work ok. The sweat was pouring off me near the end hoping that I would not break the drill bit.

The De Walt drills were brilliant. Best I have ever used . Just for fun I tried a cheaper bit for a short while. No contest. In future, I will only buy the best.

A slight downside. On starting the second hole at the other end, I became over confident and managed to work harden the hole. Not a problem as I can start again in a different bit.

I don't think I could make a precision straight hole without lots of practise which is unlikely.
I just don't have the room for a pillar drill and would not be able to give it much work. There are other options which have been suggested and are worth investigating.

On reflection, I could have bought stainless threaded 304 stainless bar and nuts/wingnuts.
I was not aware that they existed at the length I needed. Anyway, It's been fun doing it and I will remember that there is a little bit of you and me in it each time I slot it in .

 

[Kilo]

Seeing that we are still in lockdown and nothing particular to do, I have had a go at drilling holes into the 20mm stainless bar following all the above suggestions and advice. I used an Argos 12v cordless drill I keep on the boat . I thought drilling holes might serve some purpose if I ever had to do it at sea. In the end, I used 3mm drills which seemed to be ok .

It took about 15 minutes to drill the first hole. I had plenty of breaks in order not to work harden. Slow speed and lots of pressure seemed to work well. I used 3 in 1 oil which seemed to work ok. The sweat was pouring off me near the end hoping that I would not break the drill bit.

The De Walt drills were brilliant. Best I have ever used . Just for fun I tried a cheaper bit for a short while. No contest. In future, I will only buy the best.

A slight downside. On starting the second hole at the other end, I became over confident and managed to work harden the hole. Not a problem as I can start again in a different bit.

I don't think I could make a precision straight hole without lots of practise which is unlikely.
I just don't have the room for a pillar drill and would not be able to give it much work. There are other options which have been suggested and are worth investigating.

On reflection, I could have bought stainless threaded 304 stainless bar and nuts/wingnuts.
I was not aware that they existed at the length I needed. Anyway, It's been fun doing it and I will remember that there is a little bit of you and me in it each time I slot it in .

Bravo!

 

[rogerthebodger]

With regard to drilling the second hole its more likely the the first drill bit had been blunted a little when drilling the first hole than the stainless work hardening.

I also tend to used a battery drill if drilling by hand due to the slower speed of battery drills than mains drilling machines.

 

[MystyBlue2]

Well done!

I bet it was easier than you where expecting though?

Yeah there was easier options such as stainless studding however, With you already having the 20mm round and giving it ago it should make you a bit more confident in the future.

 

[penberth3]

Well done!

I bet it was easier than you where expecting though?

Yeah there was easier options such as stainless studding however, With you already having the 20mm round and giving it ago it should make you a bit more confident in the future.

Another thought. If this pin is going in and out all the time - a decent chamfer on one or both ends might be useful.

 

[MystyBlue2]

Another thought. If this pin is going in and out all the time - a decent chamfer on one or both ends might be useful.

Absolutely