The 2-piece set works on screws from size #6 to #14, and should be in every woodworker’s toolbox. In fact, no matter what kind of screw I tried it on-steel screws, drywall screws, brass screws, Phillips, slotted or square drive-GraBit worked in them all. Surprisingly, the burnishing/ extracting process worked exactly as advertised. To test GraBit, I intentionally bunged up a Phillips-head brass hinge screw so badly, I even couldn't see where the drive slots had been. The key, I found, is to create a smooth dimple for that spiral to seat in. The spiral bites into the dimple, and out comes the screw.
Flip the bit around to expose the reverse-spiral extracting tip then use your drill/driver, slowly, in reverse. Type GRABIT('-sample') to load a sample image.Ĭreated in MATLAB® R13.Each end of the GraBit bit has a different function: The burnishing tip bores and smooths a shallow dimple in the messed-up screwhead. GRABIT(FILENAME) will start the GUI program and open the image file FILENAME. Basically, any format supported by the IMREAD is accepted. The types of files that will most likely work are BMP, JPG, TIF, GIF (up to 8-bit), and PNG files. The calibration stage ensures that the imperfect orientation or quality of the image is accounted for. This code will also work for extracting data points from a tilted or a skewed image (even upside-down or mirrored). In addition to using the zoom button, there are keyboard shortcuts for zooming: Panning is achieved by clicking and dragging on the image.
Variables can be renamed, saved to file, or edited in Array Editor. Multiple data sets will remain in memory so long as the GUI is open. You will be prompted to select 4 points on the image.ģ.
It can also be renamed and saved as a MAT file.Ģ. Multiple data sets can be extracted from a single image file, and the data is saved as an n-by-2 matrix variable in the workspace. It is capable of reading in BMP, JPG, TIF, GIF, and PNG files (anything that is readable by IMREAD). GRABIT starts a GUI program for extracting data from an image file. GRABIT Extracts data points from an image file.
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