3-PIECE RIMLESS ADJUSTING
Measuring and fitting a rimless mounting is basically the same as fitting any spectacle frame. However, 3-PIECE RIMLESS ADJUSTING, the fitter enjoys greater freedom in regards to the size and shape of the finished lens, great care must be taken when determining segment heights and optical centers. It's not uncommon for the fitter to realize that he or she forgot to take into account a deeper "B" size measurement than what is represented on the sample mounting, causing a re-make that will not only cost additional money but also a dispensing delay. In addition because most frames manufactured today offer only one temple length per eye size it may very well be necessary to shorten or extend the temple length for a proper fit, an important factor due to the thin temple material on most rimless mountings. It is very important to keep even for both sides of lenses, otherwise, it effect Segment Height measurement.
The Rimless Toolbox
Now is a good time to examine the tools needed for rimless in addition to the usual tools found on any bench top. It's a good idea to keep these tools separate from other tools for two reasons: First, you'll always know where these specialized tools are located, and second, it prevents someone from using the tool for purpose other than rimless mountings. Inspect these specialized tools on a regular basis for excessive wear or damage. For example, when using a rimless tube cutter, don't use it to cut metal fasteners as this can damage cutting edges While one can wince at the thought of buying even more tools, bear in mind that scratching or breaking just one pair of AR coated progressive lenses would probably pay for these additional items plus they will certainly make working on the mountings considerably easier and provide a more professional result.
“No fear” adjusting with drilled lenses is possible and that horrible “snapping” sound of a broken lens can be avoided. The key is a rimless bracing plier. It will stabilize or brace the lens and mounting, and allow a variety of adjustments and increased confidence with rimless.
The bracing plier braces critical stress areas. One jaw pivots to compensate for lens curve and is positioned on the back of minus lenses, on the front for plus. This prevents slipping off the lens while adjusting. The stable jaw is placed on the opposite side. With the bracing pliers in position, the frame is ready for adjustment.
Checking for hot to adjust eyeglasses and fit frames?
In fact, one bracing plier is not enough, two is required for easy, no fear rimless adjusting.