Lower Saw Guard

[JPG]

rayjack,

I can see that you have put in a lot of thought and effort to this. The area beneath you Mark V looks as though it has worked. Now I have been accused of sweeping and vacuuming right before I take pictures. Is there any chance I have company sweep and vacuum in this.

I have to study your entire post a bit more but please answer one question. Do I see, in the first image, an exposed blade in the lower saw guard area?

DUSTY: He took it loose to to better show it? The hose in that pix is the one attached to the lower saw guard.

Rayjack; Very interesting approach! A LOT of original thinking! You got me thinking(Not so much the debris collection, but as a DIFFERENT way to store blades etc). A ROPE!:eek: Whatever works!:rolleyes: Interesting storage below also!:)

I just gotta ask: Does the 50 Hz speed reduction present any problems to you? How DO you compensate?


EXCELLENT PIX!!!!!

[keakap]

I really think the biggest problem is there is not enough incoming air to set up a strong wind pattern to the dust collection port....I suspect it is a combination of many factors. Dust collector velocity, wind flow pattern, cracks and holes that allow dust out or air in, even blade and blade speed.

AHA! "enough incoming air"-- 'enough'? or 'fast enough'?
I'm going to make a plug to stick in the lower guard dustport (sounds like a small marina on the Sea of Cortez) that will accept the small hose from the ShopMate. See if moving the same volume at twice the speed will suck in those air gaps instead of letting stuff escape.

[beeg]

Hey Dusty. I was looking at your pics again and that's about the amount of sawdust I get. I still have the OLD saw guards from my original purchase.

[dusty]

Hey Dusty. I was looking at your pics again and that's about the amount of sawdust I get. I still have the OLD saw guards from my original purchase.

That's good, Beeg. At least you don't have to make any fixes to eliminate the saw dust that gets away. I wasn't so lucky but I've about fixed that.

These next four images are two before and two after the final fix. I don't have to tell you which is which.

In the second picture, the table was raised so that I could view the dust pattern that collected on the saw guard..

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Before the Final Fix


[ATTACH]5972[/ATTACH] [ATTACH]5973[/ATTACH]
Final Fix Has Been Incorporated

Ed in Tampa, these last pictures prove your theory in that there is some dust that comes over the top. However, I think I am through with this set of modifications until I have had time to do a couple wood working projects. The extent of cleanup will tell me if I must do more.

NOTE: In any of the images shown where the amount of sawdust was the subject being presented, the cut that created the sawdust was a single rip cut through a 3'-4' long through a piece of 1" MDF. I don't have any good lumber that I am about to cut up for testing. That will have to wait for a real project. SWMBO says that better happen soon. She is getting tired of waiting.

[keakap]

... I've about fixed that....the final fix. ... this set of modifications

Hm, there seems to be something missing...

[dusty]

[quote="keakap"]Hm, there seems to be something missing...

]

Hmmm....what seems to be missing keakap?

You might have caught me between edits.

[tryinhard]

Dusty,

I am sorry I missed your explanation of "the final fix." Is it the metal pieces over the slots in the lower guard?

Did you find the reduction seen in these latest photos is true at all different table heights and wood thicknesses?

[dusty]

Dusty,

I am sorry I missed your explanation of "the final fix." Is it the metal pieces over the slots in the lower guard?

Did you find the reduction seen in these latest photos is true at all different table heights and wood thicknesses?

You caught me. I have not shown the final fix. I would right now but I don't have photos that depict what I did. Looking at the 2nd photo in this thread (top right side) - you see the sawdust that collects on the infeed edge of the lower saw guard and that which travels down onto the carriage. This sawdust is being thrown over the top of the saw guard, through that little trough like opening right next to the blade.

I bent some sheet metal to fit inside of the lower saw guard that extends upward to the underside of the main table when it is set for maximum depth of cut. This channels the sawdust down (with the saw blade) and out rather than throwing over the top.

I have not tested enough to answer your last question except to say that I have high hopes that the results will be equally good. I tested with 1" MDF for two reasons. One was because I had some cutoffs available that I was willing to turn to saw dust. The other being that what I use most frequently is 1/2" - 1" thick. I thought that this was going to give me a pretty good sampling.

Time will tell!

[rayjack]

I just gotta ask: Does the 50 Hz speed reduction present any problems to you? How DO you compensate?

I got this answer from the 'net (I don't want you to think I'm this clever!!)

The 50 Hz vs the 60 Hz makes little difference. The machinery making the 50 Hz rotates a little slower and may need slightly less maintenance. Products based on 60 Hz could weigh slightly less due to smaller transformer cores and motor armatures needed, but that doesn't really happen because most products are designed to run on either frequency

Ray

[rayjack]

I can see that you have put in a lot of thought and effort to this. The area beneath you Mark V looks as though it has worked. Now I have been accused of sweeping and vacuuming right before I take pictures. Is there any chance I have company sweep and vacuum in this.

I have to study your entire post a bit more but please answer one question. Do I see, in the first image, an exposed blade in the lower saw guard area?

Sorry Dusty, I wasn't trying to fool you! I had not made any cuts prior to taking the pics, I just wsnted to show you my set-up. I have looked again at the photos and at my SS, and ther is no exposed blade. The impression you get is from a curious build up of dust on the saw guard. Enlarged section of photo:

[ATTACH]5977[/ATTACH]
I really like your last post - I will add a shield to the tie bar and check it out

Ray