Search found 42 matches
- Fri Oct 11, 2019 12:47 am
- Forum: Lathes
- Topic: Screwcutting not picking up in the same place
- Replies: 19
- Views: 16503
Re: Screwcutting not picking up in the same place
Certainly an odd one. My first instinct is to cry "China" and leave it at that. What is the gear combo that gets you to 1.75? That would be something like 40:32:120:40 on my similar sized machine. Means aught to me but someone may be able to spot an issue from that. How much slop is there ...
- Mon Oct 07, 2019 12:54 am
- Forum: Casting & Foundry Work
- Topic: 3D Printed Patterns and Sand Casting
- Replies: 22
- Views: 40240
Re: 3D Printed Patterns and Sand Casting
So this is done for cope/drag greensand casting?
I have wondered about 3D printing for "lost wax/foam" type casts. Haven't had much to do with it.
Nice work though, piece looks good.
I have wondered about 3D printing for "lost wax/foam" type casts. Haven't had much to do with it.
Nice work though, piece looks good.
- Sun Aug 25, 2019 3:04 am
- Forum: General Discussion
- Topic: Looking to build a dividing head
- Replies: 6
- Views: 4912
Re: Looking to build a dividing head
I do believe one of Dave Gingery's "Build a workshop from scrap" series included a book on dividing heads. He laid out and drilled the plates by hand on a drill press.
- Tue Jul 30, 2019 1:38 am
- Forum: Casting & Foundry Work
- Topic: Working with small wood pieces/patternmaking
- Replies: 8
- Views: 17167
Re: Working with small wood pieces/patternmaking
I have banned wood on all my metal machines :D Filthy 'orrible dusty stuff. Valve core print? So you need a negative (mould) to make a core? If you mean valve as in automotive cylinder type, I'd make a reamer, probably out of an old valve. Hog out the block with drills, then ream to size and shape. ...
- Mon Jul 22, 2019 7:30 pm
- Forum: Lathes
- Topic: Newbie - Buying first metal lathe
- Replies: 89
- Views: 58186
Re: Newbie - Buying first metal lathe
As to the insert tooling, they like to be run hard and faster than you may be comfortable with, starting out. Some shapes can be fussy with lead/clearance angles.
Very generally i'd say it's easier to get a good finish with HSS.
Very generally i'd say it's easier to get a good finish with HSS.
- Mon Jul 22, 2019 7:25 pm
- Forum: Lathes
- Topic: Newbie - Buying first metal lathe
- Replies: 89
- Views: 58186
Re: Newbie - Buying first metal lathe
I'd warrant that most people are glad to offer help, and if you do ask something that's been well covered, or too basic, you'll get told to RTFM! Lathes have been around for hundreds of years, going back to treadle lathes driven by a rope wrapped around the spindle and to a sprung tree branch. Tis a...
- Thu Jul 18, 2019 3:41 am
- Forum: Casting & Foundry Work
- Topic: casting in the third world
- Replies: 16
- Views: 35242
- Thu Jul 18, 2019 3:39 am
- Forum: Casting & Foundry Work
- Topic: casting in the third world
- Replies: 16
- Views: 35242
- Thu Jul 18, 2019 3:37 am
- Forum: Casting & Foundry Work
- Topic: casting in the third world
- Replies: 16
- Views: 35242
Re: casting in the third world
I do a bit of casting. Usually in shorts, crocs, no gloves (Cast Iron I use gloves cos it's really freakin hot and my tongs are too short) The body has it's own very good pre-warning systems. IE you know when you're too close to something hot because it gets uncomfortable, so you move away. If you d...
- Tue Jul 16, 2019 10:02 pm
- Forum: Lathes
- Topic: Enlarging Taper in Tailstock Quill--Pros? Cons?
- Replies: 15
- Views: 13187
Re: Enlarging Taper in Tailstock Quill--Pros? Cons?
"Don't make what you can buy" - Exactly the opposite of how I do things. Depends how you value your time I guess. I'd rather be making the things I need, than making the tools to make the jigs to make the machines to make the things I need. I've done enough machining (trade engineer) that...
- Sun Jul 14, 2019 2:22 pm
- Forum: Lathes
- Topic: Enlarging Taper in Tailstock Quill--Pros? Cons?
- Replies: 15
- Views: 13187
Re: Enlarging Taper in Tailstock Quill--Pros? Cons?
"Don't make what you can buy" - as earlgo said, if you can source the part that's your first solution.
If you can't then making a whole new quill would be my choice.
If you do decide to modify it, I would look for/make a piloted reamer to avoid the potential yaw issue Harry mentions.
If you can't then making a whole new quill would be my choice.
If you do decide to modify it, I would look for/make a piloted reamer to avoid the potential yaw issue Harry mentions.
- Thu Jul 04, 2019 7:21 pm
- Forum: Gunsmithing
- Topic: gunsmithing tools
- Replies: 11
- Views: 24287
Re: gunsmithing tools
Where are you and whaddaya got?