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  1. R

    Advice on annular cutter for 3" hole please

    I have a job coming up which, among other things, involves cutting a 3.250" hole in a 3/4" plate of 1018. I plan to cut the hole on a Bridgeport using an annular cutter. I have an R8 to 3/4" weldon adapter for it. But I'm not sure which cutter to buy, since I don't have anything near a 3"...
  2. R

    Delrin, brass, or bronze for a pipe fitting with a hole for an interference fit?

    I am about to make a specialized pipe fitting for someone, and unsure of an adequate, yet cost effective material to use. It's just one custom fitting, that I almost assuredly will never make again. This fitting is for a hot tub. The fitting needed is a solid mip 2" fitting (i.e like a 2" npt...
  3. R

    Need advice on sizing a motor capacitor for a Jet horizontal band saw

    I picked up a Jet Bandsaw like the one linked below in case anyone needs to know the model., except mine is used, not new. https://www.ohiopowertool.com/jet-tools-414473 I know Jet isn't the best equipment, but the price was right. It was from a plant closure (not a machining plant). It...
  4. R

    Looking for recommendation for type of carbide inserts for boring small holes (steel-1/2") with a boring head

    I know boring bars have been discussed extensively on the forum, but I can't find any topics recommending carbide inserts for small holes. I have a Criterion boring kit with 3/4" dia. carbide faced bars, but prefer bars with carbide inserts. I have a few 3/4" bars which take either TPGB-321...
  5. R

    OT: Would like advice on sizing hydraulic fittings to prevent cavitation of control valve on backhoe

    Background: I recently bought a Bradco 509B attachable backhoe. It was made in 2019, but has never been used. The company has discontinued manufacture of attachable backhoes and customer support has been disappointing. I did not purchase it from a dealer, so there is no dealer support either...
  6. R

    Clearance question on stuffing box gland?

    I have a stuffing box on a piece of equipment which needs replaced. It's a simple brass stuffing box with string packing and a brass gland. A new one is not available. I'd like to put a bushing in the worn gland, but I don't know the clearance required between the gland and the SS shaft...
  7. R

    OT: Arm Wrestling Table Design Question

    Background: I have an employee who is a relative, that has been strength training for lots of years. He is like a son to me. He's into arm wrestling. And I would like to build him a regulation arm wrestling table. The problem to solve is that he needs a portable table with removable legs...
  8. R

    Question on CCMT inserts for boring bar in boring head

    I have been using a Criterion boring head in my Bridgeport. The Criterion bars which came with the head don't handle interrupted cuts well. I have wanted to try using a bar with inserts. After reading past threads on the forum, the consensus seems to be that sclrc boring bars using ccmt...
  9. R

    OT: Question on press fitting a bearing

    I've not fit this type of split race bearing before and seeking some advice please. It's a thrust bearing with an interference fit. It's a throwout bearing which goes on a tractor. It has a split inner race. (pictures attached) The inner race where it fits on the housing measures 2.497"...
  10. R

    Question on using a Hardinge Universal Divding head

    Pretty simple question I think, but couldn't find the answer in the recent thread, "Universal Dividing Head" or a search of the archives. I recently aquired a Hardinge universal dividing head. The question I have is how to engage the spiral drive on the dividing head. In other words, when I...
  11. R

    Questions regarding keyed and threaded spindle for Hardinge dividing head?

    I'd like to buy a Hardinge dividing head. I've noticed the spindles on some are threaded to accept a threaded chuck. Others accept a keyed chuck. I assume the internal taper for both is 5C? For the keyed spindle, is the spindle and key unique to Hardinge? In other words, do you have to find...
  12. R

    Wondering the best material to make a barbed wire gripper?

    I'm not a professional machinist, but need the advice of one please. I was using a wire grip sometime ago to stretch some barbed wire and the gripper instantly and catastrophically failed. This can be a serious issue. The taut wire, instantly released of it's tension, can slide through flesh...
  13. R

    FS chuck jaws for 15" lathe, plus some smaller jaws

    I bought these chuck jaws from a Triumph aviation plant closing about a month ago. I think I have about 28 sets of 3 chuck jaws which fit a 15" chuck. I think I have another dozen or so which fit smaller chucks. Just about all the jaws which fit a 15" chuck are serrated on the bottom. Just...
  14. R

    OT - Anyone know how to remove a idler gear hub on a perkins engine? (pics included)

    Sorry for the OT post, but I can't figure out how to remove the hub. The only instructions in the shop manual are, "Remove the idler gear hub." I need to get the hub off before I can remove the timing cover. I have to remove the timing cover because I have a long frozen bolt in the block...
  15. R

    Any idea of what theis fixture is from an aviation plant?

    I purchased some equipment from a aviation plant closing. This was a fixture included in a pallet of stuff. I've no idea what it is used for. Wondering if it is worth anything, or should be thrown in the scrap pile. The fixture is heavy and weighs about 75 lbs. It obviously took a lot of...
  16. R

    Can I use one 24v power supply to run a ventilation fan and a work light on a mill?

    I recently bought a new (used) work light for a B-port. It's a decent quality Halogen light. It runs off 24v. Takes a 70w bulb. I have a 24v power supply in the same box I use for the VFD for the mill. I use the 24v power supply to run a small cooling fan for the box, to keep the VFD cool...
  17. R

    Danray/Moffet vs. McMaster work light for a B-port?

    Looking for a couple replacement work lights for a mill. Would like to avoid buying junk. Sunnex, Waldman, Dazor are top notch, but priced over the top for me. Thinking about something more in the middle like this with the direct mount base, not magnetic - made in USA. Danray Products LLC...
  18. R

    Is there a friction thimble on this VIS (Poland) outside mic?

    Sorry for the simple question. I'm pretty sure this mic has a fixed thimble, but keep reading on past PM posts that VIS mics had a friction thimble. This one won't move, so I'm assuming it's fixed, but just wanted to make sure it wasn't stuck or something.
  19. R

    OT-solutions for replacing a metal spring retaining clip on a bracket?

    Apologize if the title is obscure. I couldn't think how to make it more specific with the limit of number of characters allowed in the title. I put it under OT. I need to make a copy of this bracket which came off a piece of ag equipment. But there is a spring retaining clip which holds the...
  20. R

    Question about Hi/Lo shifter/pinion block on Bridgeport 2J head

    As a background, I rebuilt the 2J head about some ago and have been using the mill some. I remember when I put the head back together, the bull gear and pinion gear (for the low speed engagement) were slightly out of alignment. The bull gear sat a little higher than the pinion gear by about...

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