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Heat treating a crossbow limb
john.k, You're no fun. We got to keep the deer population in check, and keep the hog population under control, too. Oh, be no more invites to deer leases from the tool companies we buy tooling from, too. -
How do you handle people touching your tools.
At my first job way back in time, the boss put me in the office to do his dirty work per say. Meantime they hired a machinist to take my place. Dude showed up for work that morning, had no tools. Shop manager came in and asked if I had a scale/rule he could use until he could get one. I had a... -
3D Printed Gears
Be a lot of work, maybe, to put either a spline or multiple number of keyways on the shaft and duplicate that to the gears. Another thought here. The key here is to distribute the loading across the full circurference of the shaft and gear and not just in one spot or keyway.- 4GSR
- Post #103
- Forum: Additive Manufacturing/3D Printing
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3D Printed Gears
M.B. another thought I have here. Is there room to make the gear thicker or wider? Doing that, drive it with a longer key in engagement. This would lesson the chance of it jumping out of the keyway from overstressing the printed gear causing it to bust from hoop stress as it did on the one posted.- 4GSR
- Post #100
- Forum: Additive Manufacturing/3D Printing
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3D Printed Gears
I don't know if there is room for so sort of hub as mentioned. Here's what I did to get around placing a keyway in the printed material. So far it has been working fine. I printed a hex hole in the printed gear and made a steel hub with a hex to match the hole and broached a keyway in the...- 4GSR
- Post #94
- Forum: Additive Manufacturing/3D Printing
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Sources for Connelly's book????
Posting of a copyrighted book that is still active. Not allowed here or anywhere.- 4GSR
- Post #35
- Forum: General - Archive
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Heat treating a crossbow limb
My spring vendor can fix you up with just about any grade of material from 1095 to Inconel X750. That would be one expensive bow spring! -
louge and shipley 16" lathe FDS and THDS
What model L & S lathe do you have? There's five different models they made over the years. If it is a Model X or a power turn, there is a manual on Vintage Machinery that may help you on setting the QC gear box to the correct thread pitch. Coming out of the gear box, you have to shift the... -
60 14" (16.5") taper attachments and steady rest
They are out rightest on their shipping charges! That would probably cost me 6K in shipping to get it to south Texas!- 4GSR
- Post #4
- Forum: Monarch Lathes
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bridge straight edge out of steel
Talking about chopping up a lathe bed or any other machine member into a straight edge. My dad made a straight edge about 18" long that was cut out of a machine member when I was in diapers. Later in life I got ahold of the straight edge and tried to scrape on it. Dad never did stress relieve... -
StanF South Bend 9A Rebuild Thread
What a nice find! And appears to be in very nice condition. I have a 14" Rockwell lathe that was pretty butchard up when I got it. Luckly the bed was in nice shape. I rebuilt most of the lathe and so far has turned into a nice lathe.- 4GSR
- Post #110
- Forum: South Bend Lathes
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OT Big brother is definitely watching
Put a piece of tape over that camera on your computer. Be amaze of the ads that show up related to things in the background! -
Tips for cutting API threads
Yeah, the driller got a little too agressive pushing the drill pipe.:eek: -
Need help with Bridgeport angle head id.
There's a good chance they mounted it on a non-bridgeport type of machine that had a different taper in the spindle. Did you by chance mic the id of the regester to make sure it is 3.375"? And didn't get re-bored for a different OD quill by chance? My Bridgeport RA head, I use it on my Index...- 4GSR
- Post #3
- Forum: Bridgeport / Hardinge and USA Light Iron
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Tips for cutting API threads
Rumer has it that some of the holes they drilled made a complete 180° turn, too! -
Chien Yeh lathes
"Warning: some - all? - of these CY lathes couldn't directly cut an 11.5 TPI thread for NPT 1-2"...but perhaps 2.25mm is close enough when we're talking a taper thread? I don't know as I've never investigated this with actual pressure testing (maybe someone can speak to this?). " Won't work... -
Tips for cutting API threads
Here's a couple of sources closer to your area that may be able to serve you better than the other source. https://www.reevesgaugeandtool.com/index.html Also these guys, https://www.swgage.com/ It's your call. I don't get involved with the tubular side of the industry. I deal with the stuff... -
Need Source for a piloted 7/16" Drill Bit
I think the hole is going to be a little squirrely and not straight when done. Heat shrink the liner in place. Then expect the bullet to shoot out straight and hit the target? -
Tips for cutting API threads
Before you buy from them, let me find the source for the other place I know of. They maybe a little cheaper. -
Tips for cutting API threads
Pm me and I'll fix you up with a more detailed drawing of the thread with dimensions that A.P.I. does not show you in 5B that may help you. I don't have any programming resources available to help you out. I know of one outfit that used to cut the 8 and 10 RD in four passes! Yikes!