I got new dops with my new machine, and the 1/8, 3/16, and 1,4" v dops all have a flat at the bottom of the v. No way will a sharp culet fit. My old dops dont have this problem. But then again I never had a 1/8 or 1/4" before, I just adapted and overcame. Please tell me I dont have to attack my new dops with hacksaw and files. Am I missing something or did the manufacturer miss something? I can see missing one, but all 3?
Post subject: Re: Are they supposed to be like this?
Posted: Mon Sep 29, 2014 1:45 pm
Gemology Online Veteran
Joined: Wed Aug 24, 2011 11:48 am Posts: 584 Location: Odenton, Maryland
Since they look like aluminum, they'd be easy to modify with a triangular file, but yeah--see if you can get the manufacturer to replace 'em and cover postage.
Post subject: Re: Are they supposed to be like this?
Posted: Wed Oct 08, 2014 6:25 am
Moderator: Lapidary Arts and Tools
Joined: Tue Jun 12, 2007 6:41 pm Posts: 5534 Location: Massachusetts, USA
Tool was not properly centered in the indexer. Made a pass, rotated 180°, made a pass, the outside was symmetrical and looked fine, but. It is tempting to mutter "Slitting saw" to fix that and relieve the bottom. Ideally, V dops should be made with a 60° cutter, not 45°. It avoids culet or keel contact with the metal and bears on the larger facets near the girdle for the bond. When I make conical dops, I use a piloted countersink so there is a little relief pocket at the bottom to insure the culet floats free in a "bubble" and no force ever sees it.
Users browsing this forum: Google [Bot] and 17 guests
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum