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In a previous life I had to make cutters for cutting wooden parts in the piano industry, now don't just yawn and go back to sleep. Believe it or not these were precision parts. The maximum tolerance we were allowed on any part was plus or minus two thou and this was the blank cutoff. Holes had...

Looks like you lost the tip of the cutter on one side. It's forming a step in the root. Just off out now but will posts some views on hardening when i get back and this is from past experiences.

Very nice, I shall be following this but can a moderator please rotate the pictures please ?

I want to be cremated and my ashes made into an egg timer so I can carry on working. Tools and possessions ? not bothered as I'll be past caring. Would be nice to go to the grave with a working copy of Mach 4 but either that won't happen or I'll make 187 before I die.

So 100 miles worth of petrol to save the difference between a piece of 1/2" brass and a piece you already had that probably doesn't owe you anything ? Yup, that makes a lot of sense................................

Did you see the bit where he passed it over his thumb and it masked the rust underneath ?

At 1:50 he makes the unit move 3 divisions or 120 degrees. On the first move one chuck jaw is vertically down, subsequent moves should leave one jaw still vertically down but on the last move the jaws are well out ??

Just a note that Myford gears are 14.5 degrees PA

Well your right to call it what you like but there are precedents. SOHC is just a single cam operation one or more valves. DOHC is double [ 2 cams ] operation one or more valves.

Don't you mean SOHC ?

Drummond gears are 14 DP 14.5 PA, made 100's of them including the tumbler reverse gears for the conversion that the Yahoo group did. Might still have some tumbler reverse gears kicking about ?

There is currently a series on making a gear cutting machine running in MEW. I think this months edition is episode 3 but not certain.

Try oxy /acetylene welding without one then ?

Copy just gone up for sale on the Homeworkshop advert site. http://www.homeworkshop.org.uk/index.php

How tall is that shed John ? Is it just for storage or working in ?

I don't believe it

I don't weld ships but I do use a lot of wire so for me it's who does the best deal on the best quantity. Can't answer the poll as I only use normal wire, not gassless, and only in 15kg reels so at these sizes you tend to get quality. Put it this way, never had to throw a reel away because I...

No that is with standard clearance which on 1 MOD won't be much. You will not be able to run or even need to run zero backlash, at model engine speeds the noise and wear would be horrendous.

19 and 38 are 28.5 In 1 MOD it's easy to work out. Add 19 + 38 = 57, then divide by 2 to get half of each centres = 28.5 Then multiply this figure by the MOD which in this case is 1 so says the same. If it was a 1.5 mod gear [s] it would be 28.5 x 1.5 = 42.75 Don't forget if you are putting...

Those 1 mod gears will have a centre distance of 27mm. If your centre distance is what you say and written in stone then the only way is to make at least one of the gears to corrected dimensions. Out at the moment but I can work it all out for you tonight.