By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Grinding hss

All Topics | Latest Posts

Search for:  in Thread Title in  
<< First < Prev 1 2
Steve Wan30/12/2009 01:40:54
131 forum posts
3 photos
Hi all
 
I agree with Meyrick! If the Quorn is too hard to build...simply look at my photo. I made
a basic tool and cutter grinder. It has been tested and works!
 
Upcoming project a drill grinder machine simplified version of BSG 20 (German made).
You guys will have a chance to view soon
 
Any question drop me a line.
Ian Abbott30/12/2009 21:14:59
avatar
279 forum posts
21 photos
If  you're just touching up drills and lathe tools on the side of a normal grinding wheel, I doubt that you'd wear it enough to need dressing.  I used the same side of one stone for about fifteen years and it didn't look much different to the day I bought it.  If a side does wear, perhaps just flip it and use the other side.
 
On using stones, either side or front, I try to use a different part of the wheel each time, so that it wears sort of evenly, that way I don't waste stone just truing it up all the time.
 
Ian
mgj30/12/2009 22:51:24
1017 forum posts
14 photos
I don't know but I'm always surprised by how well a newly dressed stone cuts, cmpared to its previous life. Less heat more cut and all that stuff.
 
To touch up any drill or HSS tool you are not going to press it in straight against the wheel - you have to sweep it sideways across the face, or else any grooves in or imperfections in the wheel get transferred and you don't get a straight edge.
 
I don't suppose that will have a lot of effect on a coarse grit stone roughing stone - if you can get the edges to line up repeatably (requires a jig), but it most certainly will on a finishing stone like a white 60 grit job. And one needs one of those because if the finish on the tool is like a badgers bum, its difficult to machine to a mirror finish in steel.  I regard a mirror finish on my HSS tools as being normal, though I don't always change to the finishing cup for larger drills.
 
Stones blunt too. When you dress one up properly with a diamond and a guide, as with a Quorn, you only take off about .0002". My 4" finishing cup stone is 20 years old, but it  sure isn't as deep as it once was, though it still has probably another 10 years in it.
 
Also first thing you do with a new or remounted stone is dress it to make sure its running true? So it doesn't vibrate and cuts evenly etc?  Should one not?
<< First < Prev 1 2

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Shopping Partners
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate