Monday, September 28, 2009

Scraper Therapy

Scrapers, those inexpensive acrylic or polycarbonate rectangular pieces of plastic, are often overlooked in the importance of proper ski tuning / maintenance. When in fact, scrapers play an integral role in achieving maximum glide and performance from your skis. Like everything else in ski prep - progressive steps & attention to details will lead to a positive outcome. This also applies to scraper sharpening.

Additionally, I find that sharpening my scrapers before each tuning session creates the proper feng shui to get my tuning mojo flowing.

There are as many methods to sharpen scrapers, as there are scrapers in the universe - however one constant is the end result - a clean, burr free, 90' edge. Why - any nicks or burrs on your scraper will lead to damage to the skis’ base structure.

Regardless of the sharpening device or tools utilized (Edgr, TOKO, Swix, SVST Holmenkol, Beast, Maplus electric planer, pansar and so on) - there are basically 2 steps -

Step 1
coarse / rough work
(see list of sharpening devices above)

Step 2
clean up / smoothing / polishing
using 220 emery paper or 400 mesh sheetrock sanding screens; flat surface, 90 degree, aided w/ block of wood, angle iron leaving a smooth, burr-free surface.

The scraping process should take about 5 - 7 passes with a clean, sharp scraper to remove all the wax before you begin brushing and the scraper should last about 3 - 4 pairs of skis before needing to be re-sharpened. Always check the edge of the scraper after each pass to be sure that you haven’t picked up any nicks or burrs. It is also a good idea to scrape lightly after you brush, as each brush will bring more wax to the top of the structure.

Using and maintaining a clean, sharp, and burr free scraper is paramount to success in removing wax from your skis for maximum glide and performance!

So before your next tuning session, let some scraper sharpening therapy do you some good.

4 comments:

Anonymous said...

Blake: was thinking of getting an Edgr, but couldn't find any reviews. Do you recommend them as an easy quick way to get a great edge on a plexi scraper?

Unknown said...

Hey Blake!

I picked up a polycarbonate scraper, but I'm having a devil of a time getting a crisp edge on it. I use coarse drywall screen and extra fine sandpaper as you suggest. It works beautifully on acrylic scrapers...but not so hot on lexan.

Thanks!

p.s. Sorry I missed you this week -- the skis look absolutely perfect!!!

Jim in Utah

Blake Lewis said...

Yes, the Edgr is easy and efficient to use, but more importantly, it creates a consistent edge each and every time. I still recommend using 220 tri-m-ite paper to polish & remove micro burrs prior to use.

Jim in Utah - Regarding the polycarbonate scraper - this plastic is softer and does not interact well with the drywall screens. Focus on using just the 220 paper for polishing.

CleanCarve said...

Once you have your setup just right everyone should carry a diamond stone to keep the burrs at bay. Nasty rocks spring up when you least expect them.