• Scam Alert. Members are reminded to NOT send money to buy anything. Don't buy things remote and have it shipped - go get it yourself, pay in person, and take your equipment with you. Scammers have burned people on this forum. Urgency, secrecy, excuses, selling for friend, newish members, FUD, are RED FLAGS. A video conference call is not adequate assurance. Face to face interactions are required. Please report suspicions to the forum admins. Stay Safe - anyone can get scammed.
  • Several Regions have held meetups already, but others are being planned or are evaluating the interest. The Calgary Area Meetup is set for Saturday July 12th at 10am. The signup thread is here! Arbutus has also explored interest in a Fraser Valley meetup but it seems members either missed his thread or had other plans. Let him know if you are interested in a meetup later in the year by posting here! Slowpoke is trying to pull together an Ottawa area meetup later this summer. No date has been selected yet, so let him know if you are interested here! We are not aware of any other meetups being planned this year. If you are interested in doing something in your area, let everyone know and make it happen! Meetups are a great way to make new machining friends and get hands on help in your area. Don’t be shy, sign up and come, or plan your own meetup!

Search results

  1. cuslog

    North America Does anyone have a good source for bulk drill bits?

    I use # 21 and #29 drill bits fairly frequently, ones I had were getting kind of long in the tooth and too small for me to re-sharpen. Recently bought 12 packs of both in cobalt from Amazon. About $19 and $24 respectively, delivered to my door.
  2. cuslog

    Anti-foam agent for oil ?

    Yes, there is an in-line relief valve, set @ 1600 ~ 2000 psi (Princess auto analog setting with no gauge on it, so no easy way to check it.). I "think" I would see it as a reduction in flow across the window on top of the chip box (picture). At full flow, it spreads out and pretty much covers...
  3. cuslog

    Anti-foam agent for oil ?

    Thanks for your response. As of today, I've removed the spin on filter, cut it apart and spread out the paper guts -- quite a lot of "fines" trapped in the paper. Spun on a new filter, soon, I'll try it again. I like the fan idea, just don't have one to put on it at the moment, have to pick one...
  4. cuslog

    Anti-foam agent for oil ?

    Thanks for your responses and suggestions. I hesitate to start / stop for fear of affecting the accuracy of the hole but I do see your reasoning - might be worth trying, even if I do lose a piece of material. Baffle, no there's not one. Made my own tank, didn't think of it at the time but did...
  5. cuslog

    Anti-foam agent for oil ?

    Yes, makes sense. I can't help but think I just need a bigger tank / reservoir. I have a friend that has a Pratt & Whitney deep hole drill (Industrial / production model), his tank is 45 gallons, he has no heat or foam problems. Trouble is; a 45 gallon drum of that oil is $$ -- but foam in the...
  6. cuslog

    Anti-foam agent for oil ?

    Tool is power fed just like power feed on a lathe. Work piece spun @ 2000 ~ 2500 RPM, feed @ ~ .0002 per rev. Couple pics attached of deep hole drill and my setup. Deep hole drills are quite a bit different from a standard twist drill .. only one flute, point is off-center by 25% of diameter...
  7. cuslog

    Anti-foam agent for oil ?

    Hole quality looks OK, after drilling 28.5" deep hole, tool is still sharp. Oil temp and the foam give me some heartburn though.
  8. cuslog

    Anti-foam agent for oil ?

    I don't get to see the oil on the intake side but I do see it on the exit - my chip box has a plexiglass top. At the start of the hole it's foam free but it soon starts to change color and look a bit "foamey". It takes ~ an hour to drill to depth. At full depth, its quite foamey and HOT. My...
  9. cuslog

    Anti-foam agent for oil ?

    Current (and most problematic) hole is 0.212" dia. Depth is 136 X dia. Single flute carbide drill. Drill stem is hollow, pressurized oil pushed down middle, out the cutter, then back up and out via a deep crease in the tube, chips separated in a chip box, filters etc. Shop built / cobbled...
  10. cuslog

    Anti-foam agent for oil ?

    Deep hole drilling, 400 ~ 1200 psi oil pressure, using Fuchs deep hole drill oil. Seeing more foam than I'd like, especially at higher pressures. Need the pressure to flush the chips out. Anyone using an anti-foam additive that they like ?
Back
Top