Another Paddleducks build log

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spuddevans:
I'll give it a try as soon as I can get back into the workshop, thanks Bogs :thumbup:

--- Quote from: bogstandard on November 22, 2009, 05:10:07 PM ---Use a bit of metal, not your fingers.

--- End quote ---

Ahh!! so thats where I was going wrong :lol: HHMS, Hot, Heavy Metal Syndrome :lol:

Tim

spuddevans:
Well, I have not forgotten this build. I have managed to fix the SS joints that went a little wonky by doing as Bogs suggested and heating the piece up and then compressing the joints together, then laying it flat and pressing the whole assembly flat.

That was about 3-4 weeks ago. Since then I have only been able to get into the workshop for fairly short periods of time, about an hour at a time.

I have temporarily halted the paddleducks build as I have pretty much got to the point of making up the pipework and flanges, and I want to go with bent pipes instead of the extended flanges that the plans call for. So that meant that I needed a pipe bender. John ( Bogs ) was kind enough to send me some plans for a pipe bender, and I have made a start on constructing it.

Yea, yea, I know :worthless: but because of only being able to get short times in the 'shop I have been forgetting to take the camera out with me :doh:

Anyway, I will try and take the camera out the next time to show you what I've got done so far ( which isnt that much :lol: )

Tim

NickG:
Ha, I do that quite a lot Tim, esp when things are going wrong and am under the cosh! Looking forward to seeing it.

Nick

spuddevans:
Well, having managed to finish my pipe bender ( well, I got it to the point that it can bend pipes, it isn't finished in the "by the plans" sense of the word, but it works good enough for me) I have got back to this build ( finally :lol: )

Today I got started on making some pipe flanges, the plans call for making the "stand-off" type pipe flanges to withstand the pressures of machining. But because I am using bent pipes I decided to make them out of brass.

I used some 12mm brass rod and parted off 4 thinner ( about 2.5mm ) pieces and 2 slightly thicker pieces (about 3.5mm ).

I then made up a split collet to hold the "flanges" while facing both sides to thickness and smooth, and drilling the 4mm holes. I was pleased to see that using the split collet in an ER32 collet worked well.

Then it was over to the mill, where I used the split collet again to hold the sized flange blanks to drill the mounting holes. I clamped the split collet in the vice with a very expensive vice stop :lol: and put one of the flange blanks in it, and centred it by putting a 4mm drill in the mill (switched off) and then adjusted the x and y until the drill would drop in and out without friction. Then I swapped over to a 2mm drill, moved the table over by 4mm, drilled and then moved the table back by 8mm to drill the other hole, and then repeated for the next 5.

And here's the result along with the split collet.

Here's a mock-up with a bit of bent 4mm pipe.

Next I have to mill the sides of the flanges and then silver soldering the pipes to the flanges and also bending the pipes.

Tim

Darren:
Very cleaver Tim, gave me a "lightbulb" moment with that split bush .... :clap:

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