mosport
Enlightened
After receiving PM's asking about McR-18 shortening, I took some pics to share while modding last night. Pretty much all you'll need are: A sheet of 220 grit abrasive (stay away from wetsanding), a flat working surface, canned computer duster and calipers for measuring. No worries if you don't have calipers handy, a good way for referencing reduction is to match up height with an IMS 17mm. When you're finished, the McR-18 will fit as a nice replacement for IMS SO17, NX-01, NX-05 and Fraen optics inside an ARC LS.
'Superfine' 220 aluminum oxide sandpaper works well and costs only 75 cents per sheet from any Canadian Tire or Home Depot, cut that into quarters and you'll have enough for modding several reflectors. Basically the technique is to work the upsidedown reflector in a circular motion, using even hand pressure. It's a good idea to spin the reflector 1/4 turn each time you measure or clean off the working surface, so that material comes off evenly. Measure often, at different points as well to make sure the reflector is straight. You'll get some aluminum dust as well, so please take precautions by wearing a dust mask. Avoid touching the reflector surface to remove dust contamination and use computer duster to blow off anything unwanted. If there are any small burrs around the rim, gently run a toothpick around to scrape off debris and repeat with computer duster until everything's gone.
You'll notice there's a small lip where the reflector material was removed, this lines up with the ARC LS bezel perfectly and is not visible (unlike the IMS SO17).
IMS SO17 vs. shortened McR-18
That's basically it, happy modding!
'Superfine' 220 aluminum oxide sandpaper works well and costs only 75 cents per sheet from any Canadian Tire or Home Depot, cut that into quarters and you'll have enough for modding several reflectors. Basically the technique is to work the upsidedown reflector in a circular motion, using even hand pressure. It's a good idea to spin the reflector 1/4 turn each time you measure or clean off the working surface, so that material comes off evenly. Measure often, at different points as well to make sure the reflector is straight. You'll get some aluminum dust as well, so please take precautions by wearing a dust mask. Avoid touching the reflector surface to remove dust contamination and use computer duster to blow off anything unwanted. If there are any small burrs around the rim, gently run a toothpick around to scrape off debris and repeat with computer duster until everything's gone.
You'll notice there's a small lip where the reflector material was removed, this lines up with the ARC LS bezel perfectly and is not visible (unlike the IMS SO17).
IMS SO17 vs. shortened McR-18
That's basically it, happy modding!