Replacement Set of Dual Blades 8"

Replacement Set of Dual Blades 8" For The Acu-Cutter350

Blade Replacement Information 

Replacement Procedure
Your foam cutter has a set of two blades. One blade (longer) is the moving blade. The other blade (shorter) is the fixed blade. Under normal wear conditions, only the moving blade will need to be replaced. However if both of your blades are damaged, follow the procedure for both blades. 

Blade replacement (moving blade) – most common

1. Place the saw on its side unplugged on a table in front of you.
2. Notice that there are two vents near the front on the right hand side of the motor. With a thin screwdriver etc., rotate the fan until the driveshaft of the motor is in the upper position.
3. Notice that there are two blades in the saw.
4. Their beveled edges are on the outside and their teeth are together on the inside.
5. Loosen the two screws on the blade clamp (or lift and hold up the blade clamp lever) of the motor and remove the old moving blade by lowering it down to clear the clamp and then lifting it up and out.
6. When the blade is clear of the roll pin (about one inch above the base), remove the blade from the guide and place it on the outside of the guide. This action will help you avoid hitting the teeth on the black metal bracket.
   
7. Reverse the process in paragraph #5 and replace the new moving blade so that it is on the same side as the old moving blade.
8. Take care not to damage the teeth against the black metal bracket.
9. Place the top of the moving blade in the blade clamp as before and be sure that it is all the way up in the blade clamp.
10. Tighten the two screws securely in the blade clamp or lower the lever. Start the motor very slowly at first to make sure that everything is ok.
11. Lubricate the moving blade – see lubrication.

1. Place the saw on its side unplugged on a table in front of you.
2. The motor on the right, blades facing away, and base on the left.
3. Locate the round roll pin - found about one inch above the base.
4. Place a support underneath the saw at the roll pin. We use an UPS roll of tape.
5. Because a drill bit can shatter when hit, safety glasses must be worn.
6. Use a hammer and a 1/16th-inch drill bit or punch to remove the roll pin.
7. Disconnect the moving blade from the blade clamp of the motor – found at the top of the moving blade.
8. There are two blades – a moving blade attached to the motor at the blade clamp and a fixed blade held in place only by the roll pin.
9. Note the position of the blades (moving blade is below the fixed blade) in order that you can replace them to the same position.
10. Note how the blades are positioned beside each other with their beveled edges to the outside.
11. The blades should now move freely.
12. If the blades do not move freely, you should investigate – perhaps they are clogged with silicone, debris, or a burr.
13. Remove the old blades from the saw.
14. Note the hole in the fixed blade and the slot in the moving blade. Also note how the roll pin holds them in place through the hole in the saw.
15. Thoroughly clean the blade guide cavity, which holds the blades.
16. If necessary, use the old blades to scrape out any burrs or other material in the cavity.
17. Place the new blades in the saw in the same position as the old blades – beveled edges to the outside – moving blade on bottom and the fixed blade on the top as before.
18. They should move freely although some tightness is acceptable.
19. Remove blades.
20. Place the saw on its side again as before (see #2).
21. Using needlenose pliers with a good grip, push the roll pin into the hole to get it started.
22. Place the fixed blade into the blade guide and line up the hole of the blade and the pin. See para #8 and 9.
23. Place a support underneath the saw at the roll pin as before.
24. Lightly hammer the roll pin into the saw through the fixed blade until it is centered in the blade guide.
25. Because a drill bit can shatter when hit, safety glasses must be worn.
26. **To secure the pin, stake the pin on both sides. Place a 1/8th drill bit over the pin and hit it with a hammer. Repeat on both sides. This action will center the pin and will chip a small piece of the blade guide over the hole so that the pin is secure**.
27. Slide the moving blade into the blade guide around and past the pin. See para #8 and 9.
28. Secure the top to the blade clamp of the motor making sure that blade is up to the top of the clamp slot.
29. Tighten the blade clamp.
30. Start the motor very briefly and very slowly to make sure that the moving blade is not hitting the base.
31. Lubricate the moving blade – see lubrication.                            

Blade Sharpness
The upper teeth of your saw do almost no cutting and the lower teeth are used almost always. Unplug saw. Run your fingers across the points of the teeth at the top and bottom and compare them to determine the amount of wear that has occurred to the lower teeth. 

Lubrication
The moving blade should be occasionally lubricated with any lubricating oil. The purpose of the lubrication is to reduce heat and friction on both sides of the moving blade inside the blade guide. Failure to do this will result in excess stress on the motor and shorten its useful life.

1. Stop the motor with the moving blade in the up position exposing about 1/2 inch of the blade at the top of its enclosure or blade guide.
2. Apply the lubricant to both sides of the moving blade at the top of the blade guide below the blade clamp.
3.  The up and down motion of the moving blade will draw the oil down into the blade guide on either side of the blade.

Silicone Spray
The blades may be sprayed frequently with a silicone spray. Silicone spray is effective when sprayed on the cutting edge of the blade to enable better penetration of the foam. As silicone residue and other debris may accumulate in the saw, you should remove the blades and clean the saw as needed.

Mesh Gloves
As the cutter includes very sharp blades, every precaution should be used to minimize the risk of injury. 
We also suggest the use of a wire mesh glove if there is a risk of injury.