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Hey chris very nice little tutorials mate i wish i could work out how you do this. Very important point too regarding relations and under defined dimensions its so long ago that i since i was learning ie never leave a sketch with dimensions ie blue Bruce

Hi there Pat Cromoly tube 4130 would not be my first choice mate as it is typically drawn over mandrel and has a lot of locked in stress. 4130 solid would not be my choice either its mill finished and typically not available in the annealed variety. I would suggest either 4140 annealed bar /...

Pat what a lovely bit of work it looks an excellent start mate. Your cnc X3 lloks like it was well worth the money then do you have a post on it? Well i am waiting on the arrival from the UK of my book, and after reading all the comments i cant wait to get my greasy mitts on it. after...

Joachim what can i say but :bow: :bow: :bow: STUNNING Bruce

Hmmm this is a very interesting topic that i have been watching for some time nesikachad please don't get me wrong but i fear your scaled down twin rotor design is going to be very inefficient unless you can control the interference lines points to extremely tight tolerances. May be a better...

Thanks for those links Pat looks like i will have to hit the placky card next payday. :big: I have been puzzling over your issue with the crank looking at your model of the crank the image you posted drawn in solid works it would be nigh on impossible to machine those inner webs on the crank is...

Hi there Pat Hmm i love your build and have duly subscribed, could you let me know please where you got your plans from? i would love to buy a copy myself as i would love to do a build of a v8 after completion of my Pisces II flash steam engine. Your solid works model of the crank looks do...

Um not quite that hard in 3D mate ;D 1 Make model of finished part 2 Draw a block of steel 3 do an assembly model and stick the bit in the middle of the block 4 Do a cut option ie shell the block of steel (block of steel minus model) 5 insert split lines 6 Mould is finished 7 Insert from your...

1 No for example in solidworks i use Pack and Go to export the complete model direct to my supplier who then up loads my model items complete and then does the conversion to tool paths for CNC milling turning engraving the works. this example works fine when for example all faces are to be...

Just my two bobs worth i have the luxury of Solidworks here at work so my lunch break is for me i have been working on Pisces II a flash steam hydroplane motor Pic's hopefully attached ;D My experience for the last couple of years is Rubber Moulding tooling, and design and many years ago i did...

Tmuir mate i think you have to look where the part was made. Bing toys are german and rigidly metric even in the 1800's . From a practical point of view in a perfect word a 10mm thread will be 10.00 od sorry but it does not work that way, as rule of thumb M10 for me will be turned to 9.95mm...

Thanks for your replies Gbritnell and kf2qd I am working on replica of Pisces II from a plan by Bob Kirtley its a flash steam hydroplane motor The cam sits behind the crank and is buried deep in the motor rear end. As its a Uniflow engine the cam runs at engine speed in bobs design he uses...

Hi all I am finding it hard to nut out this one so here goes ??? I need to time a gear on a poppet valve steam engine and have it open 5 degrees BDC i have some meat on the crankshaft to fly wheel area id 5/16 to 5/8 OD so can fit in a 1/16Th drive pin Now the ticklish area is it 10 holes...

Aussie slang mate, takes some time to get used to Crap on a crumpet translates to I wasnt expecting to pay that much for that with a fair bit expletives thrown in :big: Ducks Guts translates to the perfect tool / to do a perfect job / it is a perfect model / its the ducks guts mate oh a...

Sorry to say Tel but yep they are very much worth it ::) Mate need to drill a 0.5 mm hole in stainless Thm: That drill is the ducks guts and its in nice condition too mate I have a Waldown work max in my shop its 20 years old and was used 8 hours a day for at least 15 years before i got it...

Thanks for the comments gentlemen Firstly Rob yes a flash steam boiler is on the way just waiting on the tube to arrive off the back of a truck ;) 1/4 and 5/16 316 SS tube 6 metre lengths Firing is to be Gas first then something a little bit more power full I haven't decided yet. Maryak yep...

Well i have looked around for long enough and will bring you up to speed so to say on my latest engine. I am a member of a model boat club here in Melbourne and obtained a model hull from the swap meet a couple of weeks ago, now the original boat was fitted with a Stuart Sirius engine and flash...

If you had ever seen a degloved hand and i mean degloved :o ie skin and muscle taken away inside the glove you will take the advice That wedding rings, gloves, ties, and aprons have no place in a machine shop. End of story Yes I was the first one to reach him.

Over here in Australia i use the little tubs / packets from the supermarket of citric acid they are in the baking section. I think a small tub of approx 100 or 150 grams in a 9 litre bucket works best. I made the switch over on my last boiler and i am not going back to the harsh acids i too...