Another Paddleducks build log

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bogstandard:
John,

I have been using the larger tungsten router bits for a while now, and I can verify that if you can get the speed up with a fine feed, they do cut rather well. I would use a lube with them though, the cutter profile isn't the same as you get with normal metal cutting bits, and so the swarf can't be cleared as fast, the lube will help prevent the swarf sticking to the cutter.

I am looking at using them as profile cutters on the lathe as well. I have yet to do any longer trials, but initially it looked very promising.

John

spuddevans:
This afternoon I got started on the 2nd crosshead. It is amazing how much quicker you can make a part when you know what you are doing ( well I sort of know what I'm doing :lol: ) This one went quickly and I managed to get a bit better finish of the tool on this one.

Here's the 2 finished crossheads.

Now, the observant of you may have noticed that when I made both the top-caps and the packing glands, I didnt drill them for mounting holes. Well after I finished the crossheads, and feeling a little left out of the whole "I-made-a-jig-to-drill-these-parts" party, I made a jig to help drill these parts. :D

The idea is to drill one hole through the relevent top plate or packing gland, insert brass pin into newly drilled hole and release vice and rotate 90degrees, retighten the vice, drill again, and then from then on just take out the pin, rotate the topcap 90 degrees insert pin again and drill.

The jig made it very quick to drill the holes in alignment. The jig didnt take long to make, the centering of the square block of ali' in the 4jaw took the longest.

So here is a pic of all the parts I've made so far.

As you can see, the topcaps are a little rough looking, so I may remake them at some later stage.

Tim

bogstandard:
Nice one Tim,

You have discovered the time honoured way of easy indexing, using the adjacent hole as the jig. This method works perfectly for straight bar as well, if you have to have many equi spaced holes along it.

You're flying along on this build.

John

CrewCab:
Looking good Tim, I'd get it running then worry about "bling" :clap: ................... but that's just my opinion, it's your engine :thumbup:

Nice work :beer:

CC

spuddevans:

--- Quote from: CrewCab on August 08, 2009, 03:18:00 PM ---Looking good Tim, I'd get it running then worry about "bling" :clap:

--- End quote ---

I hadn't thought I was "blinging" it yet :scratch: I've just been trying to get a nice finish on the parts as I make them.

I do have some "Bling" plans for it when it is built and running though :thumbup:

Tim

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