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Here is another PC Case Mod Guide from the Mnpctech Archives! Click Banner to Visit Mnpctech website for Case Mod Supplies 3.5" & 4.5" Hole Saw Attachments. 3.5" = 92mm fan, 4.5" = 120mm fan Hole saw attachment on 1/2" Power Drill, 24 volt Cut 120mm & 92mm Fan holes in bezel. Use Fan Ducts to mark off fan hole locations with Marker onto the chassis. Use 3.5" & 4.5" Hole Saw attachment to make fan holes in chassis Any 92mm and 120mm size cooling fan will work with this PC Case Mod. You have option at this stage to install cooling fan anti-vibration dampening grommets and cover the fan hole openings with U-channel. Here are the links to these products. Mnpctech Vibration dampening fan grommets, http://www.mnpctech.com/FanGrommet.html Mnpctech U-Channel Trim, http://www.mnpctech.com/UChannel.html Cut down the two Fan Ducts, so they fit between bezel and chassis Reinstall modified bezel onto chassis Duct Tape Duct Tape any open gaps between Fan Ducts and bezel. Duct Tape used for gaps between Fan Duct and Bezel Evercoat brand "Short Hair" Fiberglass Filler with Blue Cream Hardener Cutting Filler Spreader into smaller pieces makes it easier to use. Evercoat Fiberglass dries quickly!!! (5 minutes) Mixing included Hardener with Evercoat "Short Hair" Fiberglass filler. Shown above is the typical amount of Filler I mix per application. More than this is wasted because Evercoat gets hard within 5 minutes. Overlap the edges of the Fan Ducts with Filler. Keep applying Filler until evrything is leveled together. Black & Decker Mouse Sander used to sand the filler. Use 80 grit sandpaper attachment. Wear a Ventilator Mask when sanding Fiberglass filler! Sanding Evercoat Fiberglass filler A lot of duct will be created, so it's strongly recommend to do your sanding outside. SEM brand "Flexible primer surfacer" Apply this product with Filtered Respirator Mask in Well Ventilated Area or Outdoors in 70F - 72F temperatures. I applied 3 even coats of Flexible Primer. Primer reveals small pitting (pin holes) in the Evercoat Filler. Dab Filler over small pitting (pin holes), re-sand and re-spray area. Primed and ready for paint. Plasti-kote Engine Enamel Hot Rod Green #199 Paint backside of the front bezel and Fan Ducts first. I've applied 6 coats of Plasti-kote Engine Enamel. 1-3/4" size R/C Plane Prop Spinner fits 120mm fan 1-1/2" size R/C Plane Prop Spinner fits 92mm fan Use a good epoxy for applying the prop spinner to the fan. I prefer 3M Scotch-Weld DP-190 2 part epoxy for maximum adhesion. Use something to mix the 2 part epoxy. Applying 3M Scotch-Weld DP-190 to 1-3/4" R/C plane prop spinner. 1-3/4" size R/C Plane Prop Spinner epoxied to 120mm cooling fan 120mm & 92mm fans re-installed into modified chassis. Painted Bezel re-attached. It's finished... What will you mod next?