Thursday, 31 July 2025

Why is a "RIGHT-SIDED", ONGLETTE GRAVER important? => 20 photos

 Of all the intricate setting tools that we use daily in our diamond setting are the engraving tools. The modified Onglette graver is supreme and high on the list. It has a 'surgical style' technique, and it's often better than a rudimentary Flat graver. 

 BTW, there have been no computer-designed patterns being used to create these photos.


 You can very easily see the channel wall that has been cut with the Onglette graver. This metal cutting was cut before any stone was set.

 All of this designing in metal was accomplished by repetitive metal carving

 This particular pattern was created long before any stone was set. 

  Originally, these setting holes & metal carvings were just a flat piece of metal. I used a 'Milgrain' tool to obtain a 'finished look'.  On the side of each metal cutting is a reflection of the new beads. Again, the Flat graver was never used in any of the patterns.

  I was more interested in displaying the reflection created from the  "Right-Sided 
Onglette" blade.
  
 This photo demonstrates the cutting done with the Onglette graver. You can easily see the uplifted piece of metal from the graver tip.

 This is the shape of the 'Right-Sided, Onglette graver'. As I am Right-Handed, my preference was to shape the blade to cut only on the right side.
 If I were 'left-handed', then the graver would be shaped to cut only on the left side.

 This photo displays the 'before and after' views of the blade modification on the bench grinder.

  There is no possibility that any Flat graver can successfully cut in a circle. The metal cutting must be circular with no facetting around the Tube Bezel.

 I contoured the blade to accentuate the metal cutting, thus ignoring the left side of the blade. In my eyes, the left side of the blade doesn't even exist.


 These 4 lines of cutting show how 'deep & wide' the Onglette can cut.


The four blades are designed to cut only on the 'Right Side'. You can see just how highly polished these blades can get.

 Supposing that you have a "Gypsy-Flush Setting" that needs to be finished. Are you going to use a Flat graver? My answer would be a definite, NO! Don't even attempt it!!!


 As seen in my many previous essays about 'polishing papers', I'll rub my soft core pencil with the lead and increase the soft texture of the selected paper.

 This 'pencil rubbing' will increase the grit by 2 or 3 times that of one paper.

  These two blades display the 'High Polishing' on the cutting right side. There is no comparison of the finished steel blades. I always say the blade on the left is comparable to a mirror of a telescope.

   There is no 'contoured shape' to the left side of this blade.


  In my previous essays, I displayed the metal carvings. All of this engraving was done with Onglette blades and a gentle touch with a few Flat gravers.

  Can you see if any Flat graver has been used in the metal cutting?

 The Bright Cutting on the bezel was created with ONLY the Onglette graver. The Bezel trimming was also done with the graver blade, GREAT?



Tuesday, 29 July 2025

WAX & Silver (mini claw) setting => 30 photos


 This is the rear of a rubber mold that we are to be discussing in this essay.

 This is the front view of the mold, which shows the claws clearly.


These little pins of steel are used extensively in a 'Magnetic Tumbler'. They will rub against each other as they are continually tumbled in this plastic flask.


 These small metal pins will rotate and collide with each other in a beaker, subsequently polishing hard-to-reach metal patterns.


Here is a close-up of these steel pins.

 There is only ONE TOOL to push over each claw, and that is using a hollow tip 'Bead Burnisher'.

 Here you can see the '156C, undercutting bur' that is preparing a seat for each gemstone.

 I will only have a select number of stones for each of the '4 sections' on my bench peg. It is quite easy to mis-handle the multitude of stones, as they could get dropped or get lost.

 Only 2 mini claws will be holding each stone. My '156C' will be creating a seat just at the bottom of each mini-claw. This gives each claw enough leverage to bend that one claw.

 It is imperative NOT TO SET ANY STONE CROOKED, as seen in this photo.

 GET RID OF ANY LITTLE REMAINING PIECES OF METAL before setting any diamond.

 On the left displayed wax is what I was intending the disk to look like. On the right is the finished metal casting.

 As seen in previous photos, these holes are Oval in shape but not fully ROUND. As this wax was carefully removed, a disfigured wax occasionally occurred. 

 These two steel burs are the exact 'Bead Burnishers' that will move (gingerly) the metal over each stone.
 Each burnisher must not be the same size as the claw tip, but slightly larger. The'bur cup' should cover the top of the mini-claw.

 When the 'pre-polishing' process has started, DO NOT USE ANY LARGE AGGRESSIVE POLISHING WHEEL as seen here.
 Here is an example of the 'Bead Burnisher' moving the mini-claws. It 'rounds' the claw tip as it is moving the claw.

  Imagine if 'we' had to use an Onglette graver to set these stones? The results would be catastrophic, with setting defects seen almost everywhere.

  Here is the exact 'Bead Burnisher' that I'm using and being seen under a 10-power Loupe magnification.

                     WAX CASTING DEFECTS:
         Here are a few problems that occurred before the setting.
 There was no inspection of the wax casting, thus having claws that cannot be used in a stone setting.

 There are only two words to describe this photo:
'TOTAL DISASTER'. There was no inspection of the wax casting.

  Luckily, some of these claws were not needed for stone setting. Many of them still didn't have the 'structural height' to securely move metal over any stone. 

 It appears to me that these little claws just couldn't hold any stone. Closer examination of the claws was not on the 'to-do list'.

 
  These claws appeared to be 'reduced in height'; therefore, this whole disk was on the verge of being scrapped.

  My client gave me an order to cast and set 8 disks as a necklace. Many of the initial waxes were scrapped, but I persevered and 'saved' many of the remaining items.
  
 In each disk, there were 180 stones, and then multiply that number by 8 disks, and then you have 1,440 diamonds to set.

 I kept only a very select group of setting tools in front of me. These tools were kept on a metal tray just in case some stones bounced off and got lost.

 On some 'stone openings', there was only one claw per hole. How did I overcome this setting problem?
 I used an Onglette graver with a rounded point. This 'rounded point' gently moved this one claw closer to the 'cross beam'. In the next photo, I'll display the technique that I used.

  I selected the largest diamonds and kept them all for one purpose. These stones were 'saved & set' for the full pattern.

 I used my "156-C Undercutting Bur" and created a seat for any stone that had only one claw.

 I decided not to use 'THE TECHNIQUE OF SETTING STONES IN WAX'.  There would be problems with the 'burn-out' of the wax along with the diamonds. Not to mention being unable to pre-polish the metal after casting.

  I segregated all of the required groups of diamonds long before I started to do the actual stone setting.

  I sincerely hope that this exploration on Diamond Setting proved to be helpful in your gemstone setting.