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QUESTION REGARDING DEWALT DW745 TABLE SAW

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Forum topic by stefang posted 01-12-2019 08:53 PM 882 views 0 times favorited 24 replies Add to Favorites Watch
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stefang

16219 posts in 3575 days


01-12-2019 08:53 PM

I got some nice Dewalt hearing protectors with digital and FM radio from my wife for Christmas (she is tired of always having to repeat herself, so she thought these might help me retain what little hearing I still have.) Since I now had these fancy yellow and black hearing protectors it seemed only logical that I should buy a new DeWalt DW745 table saw to go with them. (that’s how you do it boys and girls!).

I just finished setting up the saw and stand and my last task was to install the riving knife. The installation was a no brainer, but the the riving knife didn’t line up properly with my blade, a complaint I have heard repeated by many owners of this saw. My simple solution was to shim it (rather than beat it with a big hammer as some have done), which worked fine, but my question is about the item I used to shim it with. It is definitely not intended to be used to shim the riving knife, but it does look like a shim or replacement part for something. I couldn’t find anything in the manual about this part even though it may be in there somewhere. Here is what they look like and I got 3 of them with the saw in a little zip lock plastic bag. Do any of you know what they are for? You can barely see how I miss-used this item as a shim if you look closely at the last photo.

Any answers or even suggestions will be greatly appreciated.

-- Mike, an American living in Norway.


24 replies so far

View madts's profile

madts

1884 posts in 2580 days


#1 posted 01-12-2019 09:03 PM

I bought one of those saws for the install crew. The riving knife was never installed and got tossed in the garbage.
So no help from me. Nice saw though.

-- Thor and Odin are still the greatest of Gods.

View stefang's profile

stefang

16219 posts in 3575 days


#2 posted 01-12-2019 09:46 PM

Thanks anyway madts. Can’t believe they threw away the riving knife! I made my first rip cut with the saw today. Came out super smooth which was a refreshing change from the performance of my combi machine table saw. I’ve been buying Dewalt tools lately and while they might not be the very best available they have all been performing to my expectations and seem well engineered and built.

-- Mike, an American living in Norway.

View tyvekboy's profile

tyvekboy

1831 posts in 3254 days


#3 posted 01-12-2019 09:47 PM

I don’t have that saw but if the holes line up with the mounting holes for the riving knife, I would assume they are shims to help you line the riving knife up with the place. However, if you change the blade you may have to add or remove some of them.

If you need more shims than the 3 provided, I would suggest a plastic gift card as a shim. They are 1/32 inch thick. I use them for all kinds of things in the shop including shims.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View stefang's profile

stefang

16219 posts in 3575 days


#4 posted 01-12-2019 09:52 PM

Thanks for the reply Tyvekboy. They don’t line up with anything on the riving knife so I’m sure they are meant as a replacement for a part that wears out or maybe a shim for something else on the saw.

-- Mike, an American living in Norway.

View Jim Bertelson's profile

Jim Bertelson

4256 posts in 3405 days


#5 posted 01-12-2019 10:20 PM

I am not an expert on riving knives, although my saw here in La Conner has one. In theory, I guess the riving knife ought to be the same thickness as the blade, but maybe I am giving too much credit to the function of the riving knife. If it lined up so that the edge of the riving knife was at the edge of the blade, or even slightly more, meaning towards the fence, that might not be all bad. But that is all just hot air, since I don’t know much.

Really just wanted to say hello, in any case. Kink in my back today (old problem) but should be down in the shop the next few days finishing up some speaker stands. Temperature is 53 deg F here in La Conner, a lot warmer than Anchorage, and the grass and ivy are green. Welcome change from the frigid North.

Hope you and family are doing well…

-- Jim, Anchorage Alaska

View stefang's profile

stefang

16219 posts in 3575 days


#6 posted 01-12-2019 10:38 PM

Hi Jim, Good to hear from you. I think the climate in La Conner must be similar to our climate here. It’s been stormy and wet today, but warm. No problem with the riving knife now that it’s shimmed. I just need to find out what those extra parts are really for.

We are doing well here, and I finally got my shop cleaned up today. It has been a mess since I finished my elephant bowl! My son has just finished some speakers too. He told me something I didn’t know about, and that was that the leads give better quality sound if they are thicker and that the metal used to make the wire also makes a difference, with silver wire being the best available. He said it made quite a difference. His company’s landlord was the owner of a store which sold sound systems and other electrical appliances and that is who told him this. Does that make sense to you? I’m not much into sound tech, but it seemed interesting to me. I did enjoy using my new deWalt hearing protectors today listening to music while I cleaned the shop and finished setting up my new saw. In fact, the only thing I consider myself well informed on these days is back pain, entirely from experience! I hope yours will ease off quickly. I hope things are otherwise shipshape with you and your family.

Best wishes,
Mike

-- Mike, an American living in Norway.

View robscastle's profile

robscastle

5633 posts in 2445 days


#7 posted 01-13-2019 03:57 AM

Humm …wait just 1 minute.. I kinda detect there has been a shiftie pulled here.

May I ask just how Dewalt hearing protectors with digital and FM radio can improve the situation of always having to repeat herself. I suffer from damaged hearing due to high velocity dammage due to military service and I am constantly having to repeat myself to Aurora especially when trying in to whisper sweet nothings in her ear with the intention of getting some action (use your own judgement as to what action actually means)

So picture this here I am in bed with my dewalt hearing protectors on and trying to sweet talk a lady … I am sure its not gunna work !!. (but I could be Wrong)

Next the shims:-

Yep thats looks like the stuff. its a funny situation with riving knives my portable saw for instance has one.
Now when I was helping a friend refurbish his kitched I needed to cut some bench top so I used a thin kerf saw blade with lots of teeth to prevent chipout.
However no sooner had I started to do the cut the saw jambed on me it wasnt until later I realised the blade was actually thinner than the riving knife so it had to go(similar to what madts reported) however i did put it back on.
So I can see why they get binned full time.

Now the electronics:-
If you have exceptionally good quality speakers yes your Son is 100% correct.
Its a bit like a traffic on a multi lane road as a example the more lanes the sooner the traffic gets to its destination and harmonics are good get stuck in traffic and you dont arrive with the same harmony.

The saw:-
I have been thinking about buying a small rip saw as when I arrive on a site to do some work my compound saw cannot rip. It Looks like a good buy regardless of the scam you have pulled.

Who says us oldies are loosing it!

-- Regards Rob

View Joe Lyddon's profile

Joe Lyddon

10374 posts in 4293 days


#8 posted 01-13-2019 05:12 AM

Looks like a nice saw…

Have you called DeWalt yet about it…? Might help…

COOL!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View stefang's profile

stefang

16219 posts in 3575 days


#9 posted 01-13-2019 12:08 PM

Rob you old devil, I don’t wear them in bed! She is just trying to save whatever hearing I have left. Thanks for the explanation on the speaker leads. I hope I’m learning as much as I’m forgetting these days!

Joe I already tried that. It took me about 5 min. to fill out form and when I submitted it I got a message that an error had occurred. When I went back to the form it was blank. This has been pretty much my usual experience when trying to contact any manufacturers. I call it customer disservice!

-- Mike, an American living in Norway.

View doubleDD's profile

doubleDD

8053 posts in 2284 days


#10 posted 01-13-2019 02:58 PM

Hopefully Mike you don’t need those pieces. I would be skeptical about using metal as a shim being so close to the blade. Maybe find a piece of wood or plastic. Even finding an extra nut or bolt can be scary sometimes cause you don’t know if it will come back and haunt you later. If you couldn’t find it on their parts sheet I would still try to contact them just in case. By the way, it is a nice saw. I have used one like it before and it served the purpose.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View Jim Bertelson's profile

Jim Bertelson

4256 posts in 3405 days


#11 posted 01-13-2019 04:28 PM

My back is better today, and hopefully will be back to its cantankerous self by tomorrow or the next day. So will do a little work in the shop today.

Rob pretty much summed up the speaker wire thing, and I would emphasize the high quality speaker thing.

Regarding speaker wire and such, it is a function of how much volume you are trying to make, pretty much. I use fat wires for high quality speakers that you tend to run at a higher volume. The bass is the amperage hog, and high quality ones produce a lot of bass (talking about full range speakers). The fat wires are necessary for the amps, as I understand it. OK, now you have an expert opinion formed from technology from 40 years ago. You don’t suppose it has changed, do you?

Don’t think I would go the silver route, that seems extravagent. Just use fatter copper wires. That’s 40 years out of date common sense talking… (-:

Since my hearing is good, I just keep testing it. I play loud music over stereo systems at both shops, just to drown out the noise, makes sense to me… (-:

Actually, I do have hearing protectors as well, and for certain machines doing certain tasks, I tend to use them. Otherwise, I hate the devices, and just use my stereo system.

Sun is shining and the day is a wasting, time to get the shop organized…

-- Jim, Anchorage Alaska

View Joe Lyddon's profile

Joe Lyddon

10374 posts in 4293 days


#12 posted 01-13-2019 07:12 PM

Joe I already tried that. It took me about 5 min. to fill out form and when I submitted it I got a message that an error had occurred. When I went back to the form it was blank. This has been pretty much my usual experience when trying to contact any manufacturers. I call it customer disservice!

- stefang

Stepfang: . Call for the President… RE: Important Customer Feedback... Tell him your story… and let the shit run downhill… :)

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View stefang's profile

stefang

16219 posts in 3575 days


#13 posted 01-13-2019 08:50 PM

Jim Always good to get back into the shop. I don’t love earphones, but my new ones with the radio are pretty good. I have tried listening to music while working in the past and normally I just find it distracting. Maybe I have an impaired attention problem or just a simple lack of intelligence, but I do enjoy the radio while doing simple things like lumber through my through my table saw or planing or using any other machine that is noisy and/or requires my large vacuum running.

Joe I would take your advice, but I’m sure I would have to fill out that form again and then get the same error message! Anyway one of the 3 mystery ‘shims’ worked well to line up my riving knife with the sawblade. If they are spare parts I’m so old I probably will never have to replace them anyway! I’m sure the saw will outlast me by many years.

-- Mike, an American living in Norway.

View Jim Bertelson's profile

Jim Bertelson

4256 posts in 3405 days


#14 posted 01-13-2019 11:43 PM

For music I play classical, mostly solo piano. I find that the least distracting. I don’t normally have music in the background anywhere, unless I am cooking, and then I play some shmaltzy New Age cable music channel that is intended to not distract. Cooking is just not demanding enough to keep me occupied, I guess. When I was working, I would turn on my car radio every 6 months to see if it still functioned. That is really my baseline. Playing music in the shop is kinda a new thing for me, probably because I am less intense now.

OK, so now we are both shop music aficionados in our dotage, Mike… (-:

I did get into the shop and did some work today for a couple of hours, and then my back started to tire. It is really doing quite well today, however… progress…

-- Jim, Anchorage Alaska

View Schwieb's profile

Schwieb

1877 posts in 3702 days


#15 posted 01-14-2019 12:25 AM

Mike,
While I do understand the purpose of the riving knife, I found it generally to be a nuisance on my Delta Unisaw that I bought in the early 80’s. You have to take it off every time you want use a dado cutter and with different widths of kerfs of the saw blades, it may or may not help. I’ve left mine off and rely on my long bed jointer to get straight edges. I recently had to rebuild this saw with new bearings, belts and pulley. Getting the top lined up again with the fence and riving knife was a real challenge. Best of luck. Great to see you still out there in the shop plugging away. I agree with you about the customer no service thing. I go nowhere with seeking information about how to line up the top correctly. I just ended up doing it by trial and error.

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

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