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DW735 knife clamp screws won't budge

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Forum topic by dbw posted 02-23-2014 11:42 PM 564 views 0 times favorited 8 replies Add to Favorites Watch
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dbw

20 posts in 327 days


02-23-2014 11:42 PM

I bought a used DW735. The first thing I realized was at least one of the knives has at least one nick. I decided to reverse them and I got a little surprise: I cannot loosen any of the screws which hold the knives in position. It feels like the little wrench DeWALT includes is going to break or (more importantly) the heads of the screws are going to strip. I am thinking of buying a high quality 5/32” allen socket (such as Snap-on) and using my 3/8” ratchet wrench. Do any of you have any suggestions? Could I put a drop of liquid wrench on each one and let it soak in? I am eventually going to replace the cutter head with a Byrd Shelix but not any time soon. Also: can these knives be sharpened?

-- measure 3 times, cut once


8 replies so far

View Bill White's profile

Bill White

3500 posts in 2651 days


#1 posted 02-23-2014 11:55 PM

From what I’ve seen/heard, this is a common problem. Don’t know what is used to tighten the screws.
Check all other posts ‘cause I have a 733, and can’t help.
Bill

-- bill@magraphics.us

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WhyMe

128 posts in 251 days


#2 posted 02-24-2014 12:07 AM

Yes, do the drop of penetrating oil and let it set over night. Try again in the morning.

View Mark Kornell's profile

Mark Kornell

516 posts in 1221 days


#3 posted 02-24-2014 12:25 AM

Use the penetrating oil and let soak overnight.

The knifes are not sharpenable, due to the way they are aligned in the cutterhead. It isn’t that the steel can’t be sharpened – it is that there is no ability to adjust the knife projection to align them with each other after the sharpening process has left them at slightly different widths.

There is some room to adjust them side-to-side, so you can try to adjust a nick out by moving 1 or 2 knives so that the nick no longer lines up on the 3 knives.

-- Mark Kornell, Kornell Wood Design

View ajosephg's profile

ajosephg

1854 posts in 2251 days


#4 posted 02-24-2014 12:28 AM

Give each screw a stout rap with a center punch and a ball pein hammer.

-- Joe

View Tim Dahn's profile

Tim Dahn

1473 posts in 2255 days


#5 posted 02-24-2014 12:36 AM

Had the same issue with the T handle wrench (toy), once i used a regular Allen wrench I was able to loosen all the screws.

-- Good judgement comes from experience and experience comes from poor judgement.

View nashranch's profile

nashranch

31 posts in 748 days


#6 posted 02-24-2014 01:01 AM

I have a 735 and have had the knives sharpened once. It seems to work just fine

View Redoak49's profile

Redoak49

387 posts in 679 days


#7 posted 02-24-2014 01:22 AM

This is a common problem with the older DW735 that many of us have had. Once you get them out, you can buy a replacement set which have a Torx head.

You can try a bit of penetrating oil, tapping them and as a last resort, can drill the heads off or use a Dremel cutting wheel. You can also try using an easy out bolt extractor. It is OK to destroy the current ones as it will make it much easier if you replace them with the Torx. I got my replacements at ereplacementsparts.com and are about $21. Be careful not to damage the head or bolt holes when trying to get the bolts out and be careful of the sharp edges of the knives as you work on it.

The first time with the old bolts I successfully got all but two of the bolts out and had to cut the heads off of those.

I bought very good replacement blades from Infinity.

Good Luck

View gfadvm's profile

gfadvm

11242 posts in 1380 days


#8 posted 02-24-2014 02:18 AM

Get a good quality hex driver of the PROPER size (my Ridgid was metric) and then use a battery hammer driver to loosen them. When you reinstall do not use the power driver.

I have had my “disposable” Ridgid blades sharpened repeatedly and they work better/ last longer than the new ones. It does cost me $25 a set to have them sharpened but well worth it.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

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