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(03-16-2015, 06:35 AM)PixMan Wrote: You will find the tool acts a bit different in bronze than it does in aluminum. The aluminum doesn't suck a tool in, and you have to work at it to get tool chatter.
Bronze loves to eat tools by "hogging in" and I'm not sure why it makes an otherwise perfectly good tool chatter. The most curious thing is that sometimes it does it, most times it won't and you don't get to choose.
I'm hoping for you that it just goes according to plan. Bronze can be expensive as hell. What are you using, a 660 bronze or Oiliite sintered bronze?
660 bronze. Thanks for the tips on machining it. I'll take it slow and see how it goes. I'm getting 13" of the bronze so if an "Oops!" happens I can try again.
Ed
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You might put a slight hone on the cutting edge to prevent "hogging in" if you see that happening. The "double edged sword" of doing that, is that it invites chatter. You can't win sometimes.
May I ask your source of the 660 bronze, the diameter and the price? I was looking at some larger diameter pieces in case the nut I made for Darren failed and OMG the sellers are proud of that stuff!
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Your threading tool shouldn't grab, it has no rake, but as Ken warned watch when you drill out the hole, Tom had a good tip on removing the edge on your drill bit.
Also interested in your bronze source, I need some 1 3/4 od x 1 1/2 id bushings, they want $20 each for them.
Free advice is worth exactly what you payed for it.
Greg
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(03-16-2015, 07:47 AM)PixMan Wrote: You might put a slight hone on the cutting edge to prevent "hogging in" if you see that happening. The "double edged sword" of doing that, is that it invites chatter. You can't win sometimes.
May I ask your source of the 660 bronze, the diameter and the price? I was looking at some larger diameter pieces in case the nut I made for Darren failed and OMG the sellers are proud of that stuff!
Not cheap but if this fixes my mill than it is cheap.
http://www.use-enco.com/CGI/INSRIT?PMAKA=240-2475
Ed
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(03-16-2015, 09:25 AM)f350ca Wrote: Your threading tool shouldn't grab, it has no rake, but as Ken warned watch when you drill out the hole, Tom had a good tip on removing the edge on your drill bit.
Also interested in your bronze source, I need some 1 3/4 od x 1 1/2 id bushings, they want $20 each for them.
I may have a piece of cored bronze at home in that size that I could send you. I'll check when I get home from work.
Ed
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(03-16-2015, 11:41 AM)EdK Wrote: (03-16-2015, 09:25 AM)f350ca Wrote: Your threading tool shouldn't grab, it has no rake, but as Ken warned watch when you drill out the hole, Tom had a good tip on removing the edge on your drill bit.
Also interested in your bronze source, I need some 1 3/4 od x 1 1/2 id bushings, they want $20 each for them.
I may have a piece of cored bronze at home in that size that I could send you. I'll check when I get home from work.
Ed
Greg,
I have what I believe to be sintered bronze 15/16" ID x 2 1/16" OD x 6 3/4" L. At first I thought it was brass but then I put it next to a brass rod and my just arrived 660 bronze and it's definitely not brass. Let me know if this would work for you.
Ed
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WOW Thats a more kind offer Ed. And I appreciate it very much. But being the pig I am I need more. Need to make 6 bushings about 2 inches long. Checked Enco's price off the link you had, was listed as about $40 dollars for 1 3/4 x 1 1/2 but came up as $50 something on an order but alas they don't ship to us Canucks. Called Metal Supermarket or what ever its called, they're going to get back to me with a price. But THANKS again for the offer.
Out of curiosity, the bronze you ordered is cast, centrifugally if its hollow, is sintered bronze compressed particles? Then if thats the case are oilite bearings sintered with oil introduced under a vacuum. The sintered liners we used in our shaped perforating charges were just that, metal particles compressed in a set of dies.
Free advice is worth exactly what you payed for it.
Greg
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(03-16-2015, 04:39 PM)f350ca Wrote: WOW Thats a more kind offer Ed. And I appreciate it very much. But being the pig I am I need more. Need to make 6 bushings about 2 inches long. Checked Enco's price off the link you had, was listed as about $40 dollars for 1 3/4 x 1 1/2 but came up as $50 something on an order but alas they don't ship to us Canucks. Called Metal Supermarket or what ever its called, they're going to get back to me with a price. But THANKS again for the offer.
Out of curiosity, the bronze you ordered is cast, centrifugally if its hollow, is sintered bronze compressed particles? Then if that's the case are oilite bearings sintered with oil introduced under a vacuum. The sintered liners we used in our shaped perforating charges were just that, metal particles compressed in a set of dies.
Bummer. I got that piece for nothing from my brother. He was hurting for cash and he's a sometimes machinist so he was loading up a trailer with metal to sell to the scrap yard. I happened to go over to his place and looked on the ground and saw a couple of pieces like that. I asked him what he was going to do with them and he said he was taking them to the scrap yard to sell. I told him "the hell you are" and grabbed one piece which he said I could have for zip. I wish I could have used it to make my nuts but the ID is too large. If you find a source for what you need that won't ship to Canada, let me know and I'll buy it and ship it to you.
The bronze I got for my nuts is not sintered bronze.
Ed
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Again thanks for the offer Ed. I may take you up on that one, will see how many first born they want for it up here. If its ridiculous the price from Enco was good.
Free advice is worth exactly what you payed for it.
Greg
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Try these folks: http://www.shapirosupply.com/ BTW vets get a discount.
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