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Dewalt 734 Planer leaving ridgelines

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Forum topic by mds4752 posted 12-11-2013 06:38 PM 1895 views 0 times favorited 19 replies Add to Favorites Watch
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mds4752

48 posts in 1172 days


12-11-2013 06:38 PM

Any other Dewalt 734 Planer owners out there ever see your unit leaving a thin / short (like 1/64” tall & wide) ridgeline on the working piece?

I was planing some clean cherry from about 7/8 down to 3/4 and was taking very shallow passes (maybe 1/4 to 1/2 crank per pass) but I started noticing this ridge showing up on the left side. My non-technical mind would say 1 knife has developed a chip in its cutting edge or something.

The local service center quotes me $108 to change out all 3 knives (parts and labor together).

Any suggestions out there, or do I bite the bullet and take it in?

Thanks,

Mike

-- "Live each day as if it were your last; one day you're sure to be right." -- Lt Harry "Breaker" Morant


19 replies so far

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pintodeluxe

4854 posts in 2276 days


#1 posted 12-11-2013 06:40 PM

That is a nick in your blade. It means that all knives have a nick in the same spot. On the 735 you can slide the blades slightly to one side so the nicks won’t overlap. Maybe the 734 is the same way.
Does the 734 run reversible knives too? If so you can just flip them to a fresh edge. That is the program with the 735 anyways.

Otherwise replace the blades. It is an easy DIY job. Blades are available at Lowes etc.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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mds4752

48 posts in 1172 days


#2 posted 12-11-2013 06:45 PM

Thanks for confirming. I’ll check out the local HD/Lowes/Menards/etc for knive pricing. I’ve got a good set of tools.

The factory Dewalt service center doesn’t necessarily have the friendliest hours unfortunately. Like 9-5 M-F. Won’t be a problem for me after I retire, but until then, getting there during the middle of a work day is very difficult!

-- "Live each day as if it were your last; one day you're sure to be right." -- Lt Harry "Breaker" Morant

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bigblockyeti

3668 posts in 1183 days


#3 posted 12-11-2013 06:57 PM

Bought my second set of knives from Amazon, was ~$40 for all three that have two sides. Have you flipped the factory ones yet? I was able to move mine slightly to the left and right once to get rid of the ridges that developed from hitting something. The $108 for new knives from the DeWalt service center while completely outrageous, is about right based on what they charge for everything else.

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paxorion

1102 posts in 1508 days


#4 posted 12-11-2013 06:58 PM

Changing the planer blades should be an easy DIY job, and won’t need to go to a service center. The manual should walk you through the steps.

-- paxorion

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Manitario

2399 posts in 2345 days


#5 posted 12-11-2013 06:59 PM

the blades are super easy to swap out yourself; I’d save the service charge and do it yourself

-- Sometimes the creative process requires foul language. -- Charles Neil

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mds4752

48 posts in 1172 days


#6 posted 12-11-2013 07:00 PM

I heard that you can flip them once and I don’t believe this has been done (I bought it used so I can’t attest to what previous owner did or didn’t do). I’ll see if I can’t flip them first and then put off buying new ones until later. Like I said, I’ve got a good set of tools, so I think I can tackle this if it’s pretty straightforward.

Thanks again all.

Mike

-- "Live each day as if it were your last; one day you're sure to be right." -- Lt Harry "Breaker" Morant

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wiwildcat

58 posts in 1425 days


#7 posted 12-11-2013 07:37 PM

Sounds like chipped knives. Refer to manual for DIY blade servicing. Also check youtube out…I found the following video there that may help… http://m.youtube.com/watch?v=GBz-xUXTo&desktop_uri=%2Fwatch%3Fv%3DGBz-xUXTo

-- Wisconsin Wildcat

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bigblockyeti

3668 posts in 1183 days


#8 posted 12-11-2013 08:22 PM

You don’t even need great tools, the included wrench works pretty well for getting in there and removing all the blade retention screws. One word of advise, it would be wise to use a needle or pick to loosen the dust from the sockets of the screws, then blow everything clean as the screws should be tight and you don’t want the wrench to cam out just before breaking the screw loose.

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teejk

1215 posts in 2147 days


#9 posted 12-11-2013 09:09 PM

I dunno about everybody else but for me that ridge serves as a very handy sanding reference.

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DaleM

952 posts in 2846 days


#10 posted 12-11-2013 11:16 PM

I have a DW734 and they do definitely have a double edged reversible blade. It’s very easy to change yourself too. Remove the small cover, then remove the allen screws. There is a small spring loaded locking lever to one side to lock the cutter in place and you must unlock it to rotate to the next cutter. Also, although many people on here and elsewhere say these are throwaway blades and cannot be sharpened, it’s not true. I’ve heard two reasons:
1. Only the very edge is hardened and after you resharpen it won’t hold an edge.
2. It will change the height of the blade in relation to the rollers and it won’t cut right anymore.
I sharpened mine and it works fine. If it turns out he other edge of yours is already dull, I can post on here how I sharpened mine.

-- Dale Manning, Carthage, NY

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bowedcurly

515 posts in 1191 days


#11 posted 12-11-2013 11:59 PM

you must use care when removing the bolts that hold the blades you need the exact size tools and be exacting when loosening the bolts and if you think you may have rounded a bolt go down to an industrial store or hardware store and pick up exra bolts just in case and replace any you think you may have rounded just to be safe have a good day I mean I don’t know how a dewalt blade comes loose but take your time

-- Staining killed the wood<<<<<>>>>>Dyeing gave it life

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gfadvm

14940 posts in 2153 days


#12 posted 12-13-2013 02:57 AM

As others have said, the blade flip/swap is a quick/easy project. I have my “disposable” planer blades resharpened and they cut better than new and last longer than new. Well worth the $25 a set they charge to sharpen them.

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

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shipwright

7167 posts in 2260 days


#13 posted 12-13-2013 04:03 AM

The planer is not a finishing tool.
It is a dimensioning tool.
Live with the little nicks until they become worth a blade change.
You are going to sand or scrape anyway.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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bbc557ci

589 posts in 1537 days


#14 posted 12-13-2013 04:46 AM

I agree with shipwrite. The little ridges are nothing more than a anoyance and as mentioned, you’re likely gonna sand or scrape anyways.

-- Bill, central NY...no where near the "big apple"

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pintodeluxe

4854 posts in 2276 days


#15 posted 12-13-2013 06:12 AM

^ I have to disagree. A ridge will create irregularities once you flip the board to plane the other side. The board may be slightly thicker on one side than the other.
Modern planers are nearly finishing tools. They may not sand wood for you, but if properly maintained they produce a pretty nice surface.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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