2 in 1 Fat Boy Scriber

Overview of the 2 in 1 fat boy scriber

The 2 in 1 fat boy scriber is a tool for fitting doors as well as a general scribing tool.

It is exactly the same size as the standard fat boy but with the ability to hold the body higher in the cradle.

In door fitting mode a 0.5mm stainless steel plate is bolted to the front of the scriber.

Once the door is reduced in size so that it fits in the frame and there is at least a 0.5mm gap, the plate fits between the door frame and the door and slides along the door frame marking a line on the door at a given distance away from the frame.

Plane down to the line and the door should fit with an even gap on all 4 sides.

When in scriber mode the plate is removed. You can use the marking wheel holder to score a line to work to. Work accurately to the line and your scribe should be just about perfect!

Go to the marking wheel holder page to see the holder in scribing action in a big boy scriber and how using masking tape gives you a clear line to cut to.

 Great on cross grain work but it works equally well on mdf and along the grain on solid.

The 2 in 1 fat boy scriber holds the 12mm Quangsheng cutter which fits the Quangsheng marking gauge.

Replacement cutters are available at www.workshopheaven.com and other online tool stores.

Setting up the 2 in 1 fat boy scriber for door fitting

When using the 2 in 1 fat boy for door fitting the marking wheel should be somewhere near parallel to the scriber base.

With no washers added set the holder 6mm from the front of the steel plate. The wheel is parallel to the base in this position with a 1mm gap between the base of the scriber and the marking wheel. Tighten the holder thumb screw and pivot bolt so that nothing can move.

You then add 0.5mm washers between the brass spacer and tool holder to give the desired gap around the door.

Using the 2 in 1 fat boy scriber for door fitting

Making the marking wheel holder more visable

This diagram shows you how to position the marking wheel for door fitting. 

Set the marking wheel in this position using the brass spacer only.

Once the wheel is set 6mm back from the front of the stainless steel plate the wheel is parallel to the scriber base and there is automatically a 1mm gap between the base of the scriber and the marking wheel (this means the line scored will be at right angles to the face of the door components).

Lock the tool holder and pivot bolt in this position and add washers between the brass spacer and tool holder to get the desired gap you want around the door.

Please note the washers are added above the brass spacer (not between the cutting wheel and brass spacer).

The 2 in 1 fat boy scriber can be used for other jobs. 

This one is being used to mark chair legs on a machine bed to prevent rocking.

Keep it sharp!

It’s very easy to sharpen the marking wheel when it is in the holder.