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Recent content by jscpm
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Does myasthenia gravis mean the victim should be terminated?
With extreme prejudice?- jscpm
- Post #13
- Forum: Shop Management and Owner Issues
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Cylindrical pillow block bearing housings do not exist?
I am trying to obtain a pillow block housing for a tapered roller bearing with a 62mm outer diameter. Normally, for a spherical bearing, this would be a type P206 housing. The outer race of a tapered roller bearing, however, is cylindrical, not spherical, so it will not go in to a P206 housing... -
OT: How to make a wagon with a flexible suspension
Its really more a matter of getting over rough ground rather than a maneuverability issue, I just need the wheels to have a little independence of motion. -
OT: How to make a wagon with a flexible suspension
I want to mount the axle for a wagon in such a way that it can flex, like the "trucks" on a skateboard. I don't need it to have a full spring suspension, just a little give so one axel can tilt one way while the other is tilting the other way. Assuming I using pillow blocks to mount the axle... -
Sourcing smaller bearing housings?
I am having a hard time sourcing smaller bearing housings. I have a 30mm shaft that I want to use tapered roller bearings on with a split plummer block housing, but both SKF and Dodge reps are telling me that they do not sell ones that small. What are my options? -
Recommendations for imperial / SAE ball screws / linear motion stages?
Does anybody have a recommendation for a company that supplies high quality imperial / SAE ball screws / linear motion stages? This is for machining applications. -
Design for a small, adjustable knee for tool holding?
I need a product or design for a small knee that can be used for holding a tool or small workpieces. It will be mounted on a linear drive and should be about 4" square and 3-5" tall or so with a throw of about 1-2". I have seen various designs over the years. For example, there is that... -
Diametral pitch seems to be irregular
Because we don't have the pinion. That's why we measuring the rack: so we can make a pinion that will fit and mate with the rack. -
Diametral pitch seems to be irregular
The metric value comes out even more wrong, as you can compute for yourself. -
Diametral pitch seems to be irregular
We have an older arbor press that we want to make a new (better fitting) pinion for and when we measure the rack we keep coming up with a diametral pitch of 7.25 Are we probably going wrong somewhere or should we expect that it is typical for arbor presses to have irregular gearing? -
Flexible, powerful benchtop machining setup using a baseplate
When we use this setup for grinding, we arrange things so that all the dust is removed or entrained in coolant. -
Flexible, powerful benchtop machining setup using a baseplate
I thought the readers here might be interested in seeing a machining setup I constructed recently using a heavy duty optical baseplate. This kind of setup allows me to get a very good power to size ratio. In the configuration shown in the photo below we are grinding a precision bevel on die... -
High quality lacquer finishes for metal work?
Any recommendation for high-quality pigmented lacquer finishes for metalwork? From what I understand the solvent based acrylics are the highest quality option (except for exotic processes like urushi). However, it is hard for me to identify suppliers and tell the difference between what is high... -
Recommended materials for dowel pins
I typically get dowel pins in 4140, but notice that they are commonly available in other materials like M2, 416 and 17-4 PH. Is there any particular reason why I would prefer these other materials? -
Laser engraver for metal - how much for a real tool?
I don't have one, but I carefully considered getting one last year. Here are the important issues: (1) It costs around $5,000 for a pretty good, semi-custom machine with do-it-yourself usability. It costs more like $25,000 for a machine from a big manufacturer with advanced software, customer...