• 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 Ontario GTA West area meetup is planned for Saturday April 26th at Greasemonkeys shop in Aylmer Ontario. If you are interested and haven’t signed up yet, click 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!

Tool Chucking Reamers

Tool
I was the guy that would grab the leads to see if it was getting any spark to the plugs...
As a young lad I watched my grandfather grab spark plugs on his old magneto driven farm equipment to see if they were firing. He'd convulse for a cycle or three, then move onto the next one. Amazing thing to watch. From a safe distance...
 
As a young lad I watched my grandfather grab spark plugs on his old magneto driven farm equipment to see if they were firing. He'd convulse for a cycle or three, then move onto the next one. Amazing thing to watch. From a safe distance...
It wasn’t that bad really, I stopped doing that when they brought out Electronic
ignition after all they said they improved the spark not to mention Acel‘s SuperCoil.
Now it only happens pulling the plug to stop the lawnmower.
Mind you going back to a earlier time in Automotive Shop it was fun to grab the plug wire and shock the guy grounded next to you as your finger jumps a spark to his neck.

Once at the Science Fair they had a machine with a + and - handgrip to show you how you can’t let go of the + or - due to muscle contraction while your Buddy cranks the dial I only did that once also lol.
 
Despite the various (interesting) forks in the road on this topic, this is an excellent discussion of an important issue. I especially liked the Blondihacks video - somehow I missed that one. While I cannot say I read every word in every reply, I think it might be worthwhile to mention that, according to what I have read and experienced, drills never bore a completely round hole. Reamers are certainly an excellent solution to the size question when making holes to fit shafts, but it is perhaps equally important to pay attention to the "roundness" issue as well. Even a reamer will never make a perfectly round hole, but they come much closer than a drill bit ever will. I have always thought this is because the reamer has at least triple the number of cutting edges - but there could be other reasons as well.
 
Back
Top