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Posted: 12/28/2012 4:49:19 AM EDT
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I'm a new hobby machinist. Where is a good source for 60 degree threading bits?
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Id or OD,
If ID, what min size are you going to work with???? To get started, might want to look at Mesa tools to get you going for now. They have index threaders that are inexpensive ,and will get you started at least. Also, for threading, your going to need to get the lathe under 60RPM, so depending on the Hobby type machines, a spindle speed reduction mod might be one of the first mods that you need to do out the gate. |
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You can always grind up your own HSS bits, using a center gauge and your bench grinder: http://www.amazon.com/RSC-General-Center-Gauge/dp/B002SPML02
I've always had good results this way, sometimes the old ways are best. |
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Quoted:
You can always grind up your own HSS bits, using a center gauge and your bench grinder: http://www.amazon.com/RSC-General-Center-Gauge/dp/B002SPML02 I've always had good results this way, sometimes the old ways are best. Yup, grinding bits is an essential skill. Carbide really doesn't shine until your SFM and feed are up there. Great for production work but most the time not so great for gun work. You will find that HSS will leave a better finish typically. Plus they are cheaper. |
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Home ground HSS bits are the way to go for us simple home shop folks, and it is also the cheapest. Also, get a diamond honing plate (coarse/fine) like you see in the hardware section to hone your bits. The sharper and more polished edges the better.
Stay away from the cheap Chinese carbide brazed bits. They are not worth the heartache. Here is a good guide, but a bit much for now: http://www.sherline.com/grinding.htm Cruise through their entire website for user friendly info. There is too much out there for us to repost. Take a look at homeshopmachinist.com and hobby-machinist.com for newbie friendly advice. Stay away from practicalmachinist until you get a bit of experience as they are either retired old farts who don't think much of anyone who did not apprentice in 1950, or are competitive pricks looking for shop work. |
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Quoted:
Id or OD, If ID, what min size are you going to work with???? To get started, might want to look at Mesa tools to get you going for now. They have index threaders that are inexpensive ,and will get you started at least. Also, for threading, your going to need to get the lathe under 60RPM, so depending on the Hobby type machines, a spindle speed reduction mod might be one of the first mods that you need to do out the gate. Its a grizzly 4003G hobby machine. Slowest speed is 70 RPM. I'd like to go three phase and VFD one day. |
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Quoted:
Home ground HSS bits are the way to go for us simple home shop folks, and it is also the cheapest. Also, get a diamond honing plate (coarse/fine) like you see in the hardware section to hone your bits. The sharper and more polished edges the better. Stay away from the cheap Chinese carbide brazed bits. They are not worth the heartache. Here is a good guide, but a bit much for now: http://www.sherline.com/grinding.htm Cruise through their entire website for user friendly info. There is too much out there for us to repost. Take a look at homeshopmachinist.com and hobby-machinist.com for newbie friendly advice. Stay away from practicalmachinist until you get a bit of experience as they are either retired old farts who don't think much of anyone who did not apprentice in 1950, or are competitive pricks looking for shop work. Thanks for the link. Its very helpful |
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Quoted:
You can always grind up your own HSS bits, using a center gauge and your bench grinder: http://www.amazon.com/RSC-General-Center-Gauge/dp/B002SPML02 I've always had good results this way, sometimes the old ways are best. this. great skill to have |
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Buy one of these and you will thank me.
T15 HSS inserts and tool holder. http://www.arwarnerco.com/p-20-kit-17-38-inch-threader-nv.aspx 
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