- Looking to buy a boring head for my Harborfreight mill/drill (33686). I saw this one on ebay
Is it any good? How about the one from harborfreight?
- My bifocals like more graduations..... it's a lot easier for me.
My lathe has non direct dials....not much matter anymore. I installed a DRO years ago.
Date: Fri, 15 Mar 2013 17:22:59 +0000
Subject: [mill_drill] Re: Boring head?
Direct reading might be *slightly* more convenient mentally, but there is no change in precision. The adjustment thread is still 20 TPI. The screw head is simply marked in 100 steps rather than 50.
I have no trouble at all in splitting the marks on my non-direct reading boring head.
But then I am using an old SB lathe with non-direct dials as well.
--- In firstname.lastname@example.org, Bill Armstrong <bill_1955@...> wrote:
> I would bet the Harbor Freight boring head IS NOT direct reading. ie; .001 on the dial is .001" on the diameter. Non direct reading means .001 movement on the dial is .001" on the radius.
> Many of the made in China boring heads are not direct reading. Makes it a pain to stay precise. Depends on how close of tolerance you want I suppose.
> I think the Shars (Discount Machine) eBay propaganda has a typo too. .0001".....No..... How about .001"
> I have an Enco, direct reading. I like it.
> I also have a Grizzly, non direct reading....that gathers a lot of dust.