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Hi Is a common practice to grind a radius in the tip of the tool, because a pointy tip will wear off quickly and will leave tools marks, a round tip will resist better and depending on the radius will leave more or less cutting marks.. But for smalls thread cutting you will need a very pointly...

Hi Glad that you resolve your alergic problem! general I don't recommend to inhale any rare vapor coming from working stuff, When I started turning on the lathe I use a lot of tap-matic in my cutters and that stuff smokes a lot, also made my turning with emulsionante-oil type coolant with a...

Im interested too It will be nice to found some small 60° diamon wheel to grind precision threads like the ones in micrometers etc.... Saludos

Thans for the support Dave and jim! Florian: well, here in Chile the smaller real end mill I am able to find is a HSS 3mm 4 flutes, and the problem is that I need to cut a 2mm channel, the dremel bit I broke costs a little more than 1/3 of the price of the 3mm end mill, so there is a few little...

Great shop!! I can not not notice the organ in the middle of the shop! great to know another model engine machinist-musician! do you mean this one?? The japanese gentleman responsible of this tremendous work is Young C. Park, you can se the articler here...

I read somewhere that the adition of cobalt in HSS increase the heat resistance of the tool bit, allowing to turn faster, for lathes the common are 8% to 10% Co I think ::) hope this helps Saludos

whoa! thanks for the very nice comments!, it's very encouraging! Florian: Thats is a very interesting article, the boring operation for my is one of the most painfull ones (cut-off comes second ;D) because the dificult to measure and the limited sizes and rigidity of the tools, and ofcouse the...

hello again! I been a little lazy the past days, lets say like a little break.. After finishing the main structure (the columns, base and the piece that I still dont know how is called ???) I decided to machine all the cylinder parts before weld the main frame, the reason is to be able to make...

Marcello thanks for quoting my little invention! I have it covered in this post: http://www.homemodelenginemachinist.com/index.php?topic=9950.0 works very good and the clamping force is better distributed hope thats help! Saludos

woow that a very interesting book Dave! I just download it and take my time to look the ilustrations, it's amazing the incredible numbers of setups and stuff for the old-days production machinery! got amazed!! and seems to cover all! gear cutting, tool and cutters, angles, math formulas etc...

Thanks people for the input! Now I switched to the lathe, this is the first time I turn a piece of that size of brass (Laton), it took me a while to get the trick on this material, playing with the speed and shape of the cutter I found that the key to a good finish is a rounded and sharp edge...

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The second column is ready!, because of the experiences gained with the first, this one took me a lot less time and effort to make here are some pictures of the pair, now Im resting a little before I go to the lathe to start the cylinder parts ;D Looking good 8) Saludos!

I just discover this little trick: This work when you have a irregular piece and make a first cut in one face, and want to cut to 90° the next face 1) put the piece in the vise and tighten just a little to prevent the piece from falling, but make sure you still can move the piece in the jaws...

Thanks jim! that's pretty motivating the brass chisel works great!, I just finish the first column!, now I will start with the second, the process will be the same, so I will skip the pohos of the second column build Saludos!

Maverick that just the tip I need!, Im still sanding, trying to clean the solder remanent of the joints, I will try the brass chisel now! :bow: thanks a lot!

thanks for the comments! I'm getting real fun time with this! I just solder the assembly, I'm waiting for it to cool some pictures: Here I'm preparing the solder wire (its not silver solder, just circuit solder) now that is all in place is time to heat things up! 8) Then a little...

Hello to all! I realise that I was spending much time thinking in all the stuff in the "I must make" list (rotary table, dividing head, tool & cutter grinder, measuring tools etc etc..) and I was getting a little stress, and no making chips at all! so I send all to hell, get some plans on the...

just woww! what a simple solutions! just put a ball with heatshrink or use a gage pin.. :bow: with those greats ideas I just loose the motivation of keep trying to separate my micrometer! Thanks to all for the responses!, I can rest in peace now that I can measure internal bores!, because I...

Hi to all I haven't post in a while, but I still follow the forum periodically! Rigth now Im making some small tools that I will need in the future, and one of those a inside micrometer, I have a spare import micrometer that Im trying to rip a part, the goal is to separate the frame from the...