• 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!

Gear Lash

D

Downwindtracker2

Ultra Member
I've installed my Teflon tape on the ways of my Delta Toolmaker surface grinder and repaired the pinion shaft. This raised the gear rack so I'm shimming it. These are not the most rigid surface grinder nor is a rack and pinion the smoothest feed. Both will negatively effect the surface finish. For smooth gear engagement what would be the backlash value be.


This all started when I wanted to single point a 1/4" Whitworth thread so I needed a Whitworth tool bit. Doing that 55* by hand would be difficult but I had a Toolmaker sitting in the middle of the shed and a 2" 3-way vise. I just had to move it against a wall and level it. But I found a few problems with Skippy. The pinion shaft flopped around and it needed Teflon tape like the factory had installed. This was a project that wasn't even on the list !
 
After examining the cable feed on my Harig SG, they are dead simple. The handwheel shaft has a few wraps of cable around it. One end of the cable is anchored solid to the end of the table. The other end is anchored with a heavy spring and long threaded rod for tension adjustment to the other end of the table. I'm surprised any manufacturer fooled with rack and pinion.
 
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