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  1. L

    Huge dealer markup on hydraulic pumps!

    A 4000 psi hydraulic gear pump failed. Bearings wore out and the gears machined away the body so not rebuild-able. Not sure why it failed as it only had 1400 hours on it and the oil and filter were always changed at the recommended intervals. My local dealer wanted $800 for a new pump and I...
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    Cutting a key seat in case hardened 8620?

    So I screwed up and forgot one woodruff key seat I needed on a 8620 shaft. I have already case hardened it to rockwell C 62 and abut .020" thick case. All my key seat cutters are HSS and I am guessing they won't work for this? So will a solid carbide cutter work or do I need to start over? The...
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    Boring a taper?

    I have never had to bore a tapered hole and don't have any tools to do so on my mill. If it could fit on my lathe I could do it but that won't work. The taper will be 6 degrees about 9/16" in depth through hole and around 1.5" in diameter. I have heard of Tree taper boring heads but they don't...
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    Trying to use a small precision chuck in a tail stock. How to hold it dead center?

    I recently bought a Llambrich precision chuck and a Royal sensitive drill feed for it. The first job I have for it will be in a lathe. The lathe tail stock is MT4 and the sensitive drill feed is 1/2" diameter. I will be using a very small drill (#78 - .016") and need it dead center in the tail...
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    Van Norman lathe, I think. What is it?

    It is on Craigslist near me. It is a Van Norman machine of some type? I always thought Van Norman made automotive rebuilding tools? I am having a hard time figuring out what this is? It says it is a lathe with a grinder. They used to make brake lathes but this does not look like one. It kind of...
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    Small precision drill chuck.

    I need to purchase a small precision drill chuck. 0" to 1/8" with a Jacobs 0 taper so it will fit my existing Royal sensitive drill. I currently have one made by Jacobs back when they were still made in the USA but after many years of use has too much run out. I need to drill a few holes with a...
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    Good quality small lathe?

    I have both 12" and 16" lathes but neither one is good at turning small parts. I need a precision small lathe for turning parts no bigger than 1/4" diameter. A lot of the turning will be in the range of 1/16" to 1/8" diameter. It needs to be able to thread. Most of the time it will only be...
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    Best choice for a tapping head?

    I need to tap a lot of 1/4 - 20 threads all the way through a 1" thick 6061 plate. What brand of tapping head is recommended for the job? This will either be done on a drill press or a Bridgeport. I started doing it this morning by hand and gave up as it is taking way too long! I have never...
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    Keeping a big aluminum disc for ringing in the lathe?

    I have a 10" diameter 6061 disc that is 1/2" thick. I need to face both sides with it attached to a 2" diameter shaft. When I start turning it, the disc starts to ring and produces a bad finish. At about 4" diameter the ringing stops and the finsh is great. I am only taking small cuts to clean...
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    Best small precision cylindrical grinder?

    I have been asked to locate a small good quality cylindrical grinder. Biggest parts it will see are 12" max length and 4" max diameter. No China junk and it does not have to be new. We are tired of sending out a part and waiting weeks to get it back. If Taft-Pierce had ever made a cylindrical...
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    Need to replace a Sunnen bore gage. What other options are there that may be better?

    OK, so the dog ate my Sunnen 10ths reading bore gage. I need to get another one ASAP. I have always had good luck with the Sunnen gages and they are very accurate. But I am wondering what other options there are that may be better? The gage will be used for measuring 1" to 2" and it needs to...
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    How to identify if a piece of metal is malleable iron?

    I have a iron casting I am trying to identify for the purposes of welding. I think it is malleable iron but it could be cast iron or even mild steel. Is there an easy way to identify what it is without destroying the part? It does bend which makes me think it is malleable but, I don't know. I...
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    Honing oilite bearing?

    I will be fitting some new oilite bronze bushings to a casting. I would like to hone the ID after they are installed. The Oilite company says no abrasive maching at all as abrasives will stick to the bronze and honing can close up the pores preventing oil from flowing out of the bearing. I was...
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    milling a slot in nimonic 80?

    I have a 5/16" diameter nimonic 80 round shaft I need to mill a 1/8" wide by 5/16" long slot in it. And yes it is an exhaust valve. Old engine that does not use valve keepers but has a piece of rectangular steel that goes through the slot to hold the valve spring. Although nimonic 80 is probably...
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    Drilling a .004" hole.

    Some months back I asked about drilling holes in brass with a number 78 drill which is .016" Your advice about using a sensitive type drill chuck helped. I have now been asked if I can drill the same holes with a .0039" drill? I have the drill bits but they are $17 each and I am scared that...
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    Surface finish for bore of brake master cylinder?

    I have an old obsolete brake master cylinder for which rebuild kits are no longer available. It is Italian and made by Brembo. The cylinder is aluminum. The only good thing is Brembo made the identical master cylinder but with a little bit bigger bore. Rebuilds kits for the bigger size are...
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    Advice needed on 50 ton hydrauic press recomendations.

    In the near future I will be needing a 50 ton hydraulic press. I have seen what is available USA made but are mostly used and old but still usable. What I am wondering is are the new China made ones complete junk? Should I stick with only USA made or ?????? I don't want a restoration project if...
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    Drilling with a number 78 drill. They keep breaking!

    I need to drill some holes in brass using a number 78 drill which is .016" diameter. They are through holes and I am drilling a 1/4" thick brass rod held in a collet. The drill bits keep breaking! I have never used a drill bit this small. I am sure I am doing everything wrong. I don't have a...
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    Bridgeport mill spindle oil. Velocite #6 or #10?

    I have been using Mobil Velocite #6 oil in my 2HP series 1 Bridgeport mill for 20 years with no problems. I was recently told that is the wrong oil and I should be using Velocite #10 which is a little bit thicker oil. Searching the web, there is no definite answer. Even business specializing in...
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    Who makes 4 point wrenches? Old type box wrench.

    OK, this should be a simple problem. The 5/16" 4 point (square head) Armstrong wrench has disappeared from my shaper for tightening the tool on the clapper box. Should be simple to find another one. Well it appears no one makes these kind of wrenches anymore. I can find lots of different kinds...
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