Wonder Bar Kit II

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Product Overview

The Ultra Bond CrackMaster Wonder Bar gives you seven different tools.

It can be configured into different tools by moving bolts and suction cups.

One Wonder Bar can be a:
  1. long crack sliding tool
  2. crack-opener
  3. low pressure stone-damage tool 
  4. high-pressure stone-damage tool
  5. star-leg flexor
  6. probe
  7. UV light holder.

Two Wonder Bars give you all of the above and the Crackmaster Bridge and the Star-Flexor Bridge.

The Wonder Bar injector hole threads are 1/2 X 20  which fits our Quick-Turn Injector or any injector with 1/2 x 20 threads.

See the new Wonder Bar explained and assembled in this video:


Wonder Bar Windshield Crack Repair Kit Tool Options and Descriptions:
(1) Crackmaster Bridge 
  • Use to repair Chips and Long Cracks with one tool
  • 6-in-1 Tool - Has six different tool configurations
  • Performs eight different functions
  • Most effective chip repair structure on the market
  • Most effective long crack repair structure  ever made
  • Sets-up in seconds
  • Self-Leveling
  • Controlled flexing, compression and tension

This NEW two Wonder Bar bridge type holding structure offers perfect compression, leveraging, mechanical advantage with no tension from the suction cups.  

The Holding Structure or bridge holds the injector in place while repairing a stone-break/chip or long crack. But the holding structure is much more than that; the structure controls pressure both on the resin injection and the pressure on the glass. Compression (pushes down)  flexes a stone-break open so that the resin will efficiently fill every leg and crater within the break. On a long crack which is surfaced it must be minimal. The physics of this structure are perfectly balanced so that a stone-break is flexed open enabling very fast injection of resin.

The proper two suction cup placement (a bridge) and the durometer do not interfere with the flexing of the break like most tools on the market do. This allows you to open the break by leverage- simply turn the pressure bolt to increase or reduce the flex. Most systems will require manual flexing by hand of the break and legs with a probe because the holding structure is not able to flex the break open properly or control the flex. Cups that are too stiff and too close to the injector will hamper the tools flexing of the break by creating opposing forces of opening (compression, pushing down) and closing (tension, pulling up) on the break which, will cause the cracks nearest to the injector to fill slower and will end up being under-filled. An under-filled leg or section will separate from the glass from cold temperature. If it is a leg of a star-break it can crack-out.

 This windshield repair tool is also used at the point of a long crack and can also slide/straddle down a long crack. This is a 6-in-1 tool. It can be split into a crack-opener and a long crack sliding structure and every other tool on our Crackmaster Tool Page.

(2) Crack-Opener

  • The secret to easy long crack repair 
  • Symmetrically opens the crack without spreading it
  • Creates an overfill
  • Being a wonder bar it can be reconfigured into three other tools

The secret to easy long crack repair with Ultra Bond structural adhesives is the crack opener.

Take it from the Crackmaster himself, size matters with a crack-opener.

I often use two at the point for an edge crack and four for a floater crack. 

The dimensions and custom made suction cups will symmetrically open the crack so you can get our structural adhesive crack resin into the point area of a long crack easily without spreading the crack. Symmetrically opens the crack and creates an overfill. You will see resin come out of the top of the crack when you release the pressure bolt which is what you want. Fundamental fact of adhesives is to overfill. The best from the one who invented long crack repair.

(3) Long Crack Slider and Single Bar Chip Repair Structures.

  • Self leveling 
  • This structure slides along the crack and does not push the crack closed
  • Change suction cups to the 2-inch stiff or 3-inch cup for chip repairs

Our Crackmaster long crack repair tool slides along and injects the resin into the crack from the surface. The Crackmaster for long cracks is designed to slide from the tip/point to the edge of the windshield. With the stabilizing bolts it is self-leveling and the pressure is controlled so to not push the crack closed. Note: long cracks are surfaced.  The pressure bolt allows you to  increase pressure when needed.

This tool's design allows for sliding and does not push the crack closed. A windshield is only 5 mm thick. The outer layer you are repairing is only 2 mm thick. It will flex easily. Tools used to repair chips have too much pressure and will flex the glass and push the crack closed so that it will under fill or spot the repair. It boils down to the physics of the tool: length, compression, mechanical advantage, size and durometer of the cups. 

The two stabilizing bolts allow for automatic leveling. Just push the cup down, level the injector and your ready to go. 

Change the suction cup to the 2-inch stiff cup or the 3-inch cup and you have a chip repair tool.

(4) Star-Leg Flexor

Often while repairing star-breaks one of more of the legs of the star will not completely fill. Since the beginning of windshield repair the method to get the leg to fill was to press on the leg with a small screwdriver or a probe and hold it until it filled. Well normally your thumb and fingers will start to hurt before the leg fills and you will let go too soon and have to do it again. No more of that, with the Star-Leg Flexor you just place the tip in the leg and turn the pressure bolt until you see it flex and then stop. Then just wait for it to fill,  let the Ultra Bond Star-Leg Flexor do the work for you.

(5) Probe 

The edge of one side of the Wonder Bar is sharpened to a point for use as a probe.

(6) UV Light Holder

When you are ready to cure the Wonder Bar also works as a UV light holder.

Kit Items:

1 - connector bolt

2 - Wonder Bar Nuts

2 - 3/4" Stabilizing Bolts

2 - 1-inch Stabilizing Bolts

1 - Crack Opener Bolt

1 - Star Flexor Bolt

3 - 2-inch Soft Suction Cups

1 - 2 inch Stiff Suction Cups

1 - 3-inch Suction Cup


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