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Type: Posts; User: R. Dan

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  1. Replies
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    You can easily find a pump to move it fast enough...

    You can easily find a pump to move it fast enough but then you need horsepower to drive the pump. That big cylinder will go through anything even if you were using a bicycle tire pump but it will...
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    My understanding is that threading tapered...

    My understanding is that threading tapered threads on straight material, either male or female is NPT. Tapering the material, male or female is NPTF, or dryseal pipe threads. In my industry we used...
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    Just about everyone in the seal business has a...

    Just about everyone in the seal business has a loaded u-cup. Check around and you will find them.
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    Trade name for a Parker loaded u-cup:...

    Trade name for a Parker loaded u-cup: https://www.parker.com/literature/Engineered%20Polymer%20Systems/5370/5370-PolyPak%20Seal%20Profiles.pdf

    We used them for rod seals in cylinder glands.
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    Get as much as you can afford. At least an i7...

    Get as much as you can afford. At least an i7 cpu, a decent video card, and as much ram as you can cram in. As for the rest of it, just spend some time studying your own needs. A good place to start...
  6. I came across his videos on YouTube a few weeks...

    I came across his videos on YouTube a few weeks ago and I've been watching some everyday. The guy is amazing to me and I love how meticulous he is. Does anyone know if he is on this board?
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    I tried a Kershaw some years ago and I wasn't...

    I tried a Kershaw some years ago and I wasn't very impressed; don't remember what it even was. But I am a Spyderco guy. My EDC is a Native 5. Great knife.
  8. Either finish it with a Dynabrade finishing wheel...

    Either finish it with a Dynabrade finishing wheel or glass bead blast it. When I fabricated stainless rotational molds, we used glass bead blasting for the interior surface finish. It's a softer...
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    Wale Apparatus Wale Apparatus - Wale Resin...

    Wale Apparatus

    Wale Apparatus - Wale Resin Bonded Diamond Wheels - SKU # 10-1399
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    [QUOTE=jim rozen;3396569] A couple of things:...

    A couple of things:

    I came to the drafting table after many years on various shop floors doing a variety of fabrication. So I was well aware of the problem shop people have trying to make...
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    1,588

    Yep, it's only as good as the guy inspecting it...

    Yep, it's only as good as the guy inspecting it and how he inspects it.
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    Don't know the answer to this question but it...

    Don't know the answer to this question but it does remind me of something I was told back in high school nearly 50 years ago. I had a drafting teacher who posed the question: "What is the best way to...
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    What ever you do, don't get rid of that 425. I...

    What ever you do, don't get rid of that 425. I traded mine in on a new 534 (I had shinyitus) about 10 years ago and it was one of my poorer decisions. I wish I still had the 425 and John Deere had a...
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    I think for a project that small I would try to...

    I think for a project that small I would try to do it myself. Lock-N-Stitch provides a lot of info and instruction on using their products and I wouldn't be afraid to take a swing at it. I haven't...
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    This. Lock-N-Stitch it then refit. Metal...

    This. Lock-N-Stitch it then refit. Metal Stitching & Thread Repair Inserts. - Turlock , CA - LOCK-N-STITCH, Inc
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    I've got crowns that are held on with UV cured...

    I've got crowns that are held on with UV cured adhesive. I'm pretty sure there is a way to unglue them too as I've had some work done on a few of them and they were removed and replaced.
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    I turn soapstone, alabaster, and catlinite...

    I turn soapstone, alabaster, and catlinite (pipestone) on my wood lathe. I use plain ol' HSS for tooling.
  18. When I was 30 I wore a 10 1/2 D. Now at age 65 I...

    When I was 30 I wore a 10 1/2 D. Now at age 65 I wear a 12 1/2 EEE. And my feet have given me a lot of trouble in the past. Best money I ever spent on boots was on a $400 pair of Whites 20 years ago...
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    Also used on the pre-war Essex Tri-Directional.

    Also used on the pre-war Essex Tri-Directional.
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    This who fabricated our tubes; at least they were...

    This who fabricated our tubes; at least they were before I retired 4 years ago: Home | Rising Star Hydraulics | Watertown, SD
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    Fluid line tubing is J525. As for sources; we...

    Fluid line tubing is J525. As for sources; we bought it in bundles from Ryerson I think, when we were doing our own bending and fab because we used a lot of it. Eventually we farmed it all out to a...
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    Welded hydraulic fluid line. It's formed, welded,...

    Welded hydraulic fluid line. It's formed, welded, cold drawn over a mandrel and then annealed in a hydrogen/nitrogen atmosphere. Here's some info:

    Fluid Line Services - Steel Hydraulic Fluidline...
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    Try using W-FLT. It's 1010 DOM then annealed dead...

    Try using W-FLT. It's 1010 DOM then annealed dead soft. It takes bending well even that tight. I know it's available in Ø7/8 x .065 wall. Used it a lot on manifold tubes for hydraulic cylinders.
  24. Thread: unknown tool

    by R. Dan
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    That's my guess. Off a prewar Essex Tri...

    That's my guess. Off a prewar Essex Tri Directional.
  25. As stated, it is a displacement style cylinder....

    As stated, it is a displacement style cylinder. The rod diameter area is the acting force. The larger the rod, the more work can be done. I designed many displacement type cylinders during my career,...
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