Watch Press, 18mm to 50mm Watch Back Case Screw Type Precise Crystal Bezel Watchmaker Watch Repair Tool Set - Watch Back Case Cover Press Tool with 20 Dies Pressing Repair

Product Information

Comes in a set of 9 bakelite lower stake dies. Assortment includes Bergeon 5500-01 (40 mm), 5500-02 (36 mm), 5500-03 (32 mm), 5500-04 (28 mm), 5500-05 (24 mm), 5500-06 (20 mm), 5500-07 (16 mm), 5500-08 (14 mm), and 5500-09 (12 mm). I'll stay away from the crystal press in this case. I don't want to take any chances, and after all, I'll be getting myself a crystal lift, and while waiting for it to arrive I'll service the movement and clean the other parts. These Bergeon tapered wall dies are reversible (each piece has two different sizes, one on each side). Comes in a set of 13 pieces. For fitting certain crystal types, including tension rings. For this crystal, I believe a crystal lift (which I don’t have) is the right tool? I do have a crystal press but I don’t dare to use it on this crystal. My guess is that a crystal lift is used for acrylic crystals without a tension ring and that a crystal press is used for acrylic crystals with a tension ring and for crystals in mineral glass and sapphire? Anyway, I’m just guessing here and really don’t know so I’d really appreciate some facts about "Crystal Press vs. Crystal Lift". This type of installation requires a press that pushes down on the new crystal from the top, in a uniform way over the entire surface of the crystal. The pusher/die on the press and the watch case need to be parallel, otherwise the glass will become crooked, and you risk breaking the crystal.

This is the one that is used and has abused more crystals than any other installation tool. The problem arises because some will mistakenly use them to try to install a tension ring crystal and they keep tightening down the screw attempting to compress the crystal, or they try to use it on a that doesn’t have enough side wall to grip onto. This usually results in gouges around the perimeter of the new crystal. The compression fit crystal is the weakest of all the crystal types as far as water resistance is concerned. To install the crystal, the skirt must be mechanically compressed to reduce the diameter by approximately .20 to .30 mm before being inserted.These Bergeon lower stakes dies are reversible (each piece has two different sizes, one on each side). Comes in a set of 11 pieces. For fitting certain crystal and case closing. Reversible Thread-On Delrin Dies for fitting very domed watch crystals. Die diameters: 18 mm, 20 mm, 24 mm, 28 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, and 65 mm. Reversible dies are domed in one side and flat on the other. Works on small, normal and jumbo sized crystals. All Horotec thread-on dies will work with the Bergeon 5500 Press. Hold case over crystal, press foot pedal to compress the crystal, slip case over the crystal, release foot pedal - you are done: Reversible Thread-On Delrin Dies for fitting crystals with tension ring. Die diameters: 42 x 45 mm, 47 x 50 mm, 52 x 55 mm, 57 x 60 mm, and 62 x 65 mm. Tapered wall reversible dies with inner side wall depth of 1.5mm. All Horotec thread-on dies will work with the Bergeon 5500 Press. In some instances, a specific type of lift or wrench can be used to remove these tension ring crystals - usually these are brand specific tools, and are not a "one size fits all" that a typical crystal lift would be.

Wow, great minds think alike, I use freeCAD and also have a 3D printer being delivered by Santa 🎅, I currently have to bribe my son to use his. I was was thinking on Friday afternoon that it may be cool to try some parametric modelling in freeCAD and sketched out a parametric movement holder. My idea was to measure the movement outer diameter and then let freeCAD spit out the complete design. NOTE: Use extreme care in pressure fitting gold watches using a watch press because they are easily bent out of shape and damaged. A watch press can emit enormous pressure on a small surface so work carefully on any watch because the damage of bending a watch case or watch bezel is many times un-repairable. Five Types of press on crystals that we cover are:Those who read this thread owe gratitude to Al for his taking the time to share his knowledge and expertise. Al's post covered the topic accurately and also corrected misinformation from some earlier posts.

Insert the watch case or bezel on top the crystal and gently press down. While pressing down you move the case or bezel onto the compressed crystal until you can feel the crystal inside the grove and release. Once I get to grips with it, I'll post the freeCAD design on thingiverse and you can also PM me for it from here 🙂 The force applied by the press both pushes the crystal down as well as tries to reduce the diameter, or roll the skirt under. This helps get the crystal skirt started in the opening in the case. If you do a lot of flat thin crystals, these flat Delfin dies give you a more even pressure as you insert the crystal in the case. The second picture shows a die with cut out which is a must for installing crystals with a date bubble.The crystal in question is an armoured or tension ring style, and these are typically pressed in using a press with an appropriate die, and not installed using a crystal lift. Here is a tension ring crystal being installed on an Omega Speedmaster: No, not really, but I have now! As shown in the pictures, the case looks like it consists of two parts. One part holding the crystal and the chapter ring (thanks for the correct term), and the other part holding the movement. Looking at the outside of the case it looks like these two parts have been screwed, pressed, or perhaps glued on to one another, or, is it indeed once piece simply designed to look like two, hmm... I wonder if these parts can be separated? Oh well, once I get the crystal off, maybe the chapter ring can be removed. I guess I shouldn't try to pry it, right? Once again, Bergeon has listened to the needs of the watch repair industry servicing luxury watches. Bergeon already has the largest selection of screw-on dies, what was needed from Bergeon a truly precision straight screw press to go with the dies Bergeon makes. Well, it's here now Swiss Made with Anodized aluminum frame with non-slip base that can be bolted down if desired. Truly Linear Spindle with Anti-rotation, allow for a straight traveling path while controlling precisely the distance the dies moves downward. Compatible with the complete range of Bergeon and Bergeon type screw-on dies. Supplied with die holder height 21 mm, optional die holders in heights 5 mm and 28 mm are available. Reversible Thread-On Delrin Dies for fitting crystals with tension ring and 1 universal die. Die diameters: 15 mm, 16 x 17 mm, 18 x 19 mm, 20 x 21 mm, 22 x 23 mm, 24 x 25 mm, 26 x 27 mm, 28 x 29 mm, 30 x 31 mm, 32 x 33 mm, 34 x 35 mm, 36 x 37 mm, 38 x 39 mm, 40 x 41 mm, and a 45 mm universal die. All Horotec thread-on dies will work with the Bergeon 5500 Press.

This set contains 4 jumbo size reversible delrin thread-on dies for fitting flat mineral crystals. Die diameters: 47 x 50 mm, 52 x 55 mm, 57 x 60 mm, and 62 x 65 mm. All Horotec thread-on dies will work with the Bergeon 5500 Press. On wooden stand (dimensions: 370 x 150 mm). Outfit consisting of: - 1 press No 5500. - 1 set of 9 stakes No 5500-E. - 1 set of 12 stakes No 5500-10 to No 5500-21. - 1 set of 9 stakes No 5500-22 to No 5500-30. - 1 lower stake No 5500-31. - 1 support No 5500-T28. This 8 piece assortment comes with Bergeon 5499-A (34.5 x 34 mm), 5499-B (33.5 x 33 mm), 5499-C (32.5 x 32 mm), 5499-D (31.5 x 31 mm), 5499-E (30.5 x 30 mm), 5499-F (29.5 x 29 mm), 5499-G (28.5 x 28 mm), and 5499-H (27.5 x 27 mm). This is the installation method used for almost all sapphire and mineral glass, both flat and domed. There is a gasket between the outside edge of the crystal and inside edge of the case. The gasket is usually going to be made from a hard nylon. The gasket will be either “L” shaped or “I” shaped and should be always be replaced for top class work.

h3 = 5mm (will only need this outer dimension also to be h3 if I decide to keep the 'shoulders' at the top of the model, thinking I may just skip the outer shoulders and have the top and bottom linked by an ark without the shoulders... I will need to think about this....any ideas??? My initial thinking is that the shoulders may flex a little as you push the movement in and grip the movement better, but not sure how realistic this idea is?) - see version 1 and version 2 below. The internal tension ring most common on vintage diver's and diver style watches, as well as vintage watches with over 3 ATM water resistance, works by having the plastic skirt squeezed between the case wall and the internal ring. I also plan to put a fillet (0.25?) on some of the outer 'corners' mainly for aesthetics, and one on the entry to the seat to make it easier to get the movement in, but didn't get time to add them to my sketch, blue circles above.