Turbo 7 blades

[Bruno of NH]

That long leaf is sure nice looking lumber

[Magicman]

If you ain't sawed Longleaf, you ain't sawed pitch.

[Bruno of NH]

Bring me up some with red cedar
I would like to make some things with it.
Do they use it for timber frames?

[Bruno of NH]

I will trade top hole maple for long leaf and red cedar

[caveman]

John had thrown the two boards that had the massive waves in the slab pile.  I dug them out and we ended up using them in the door of the hot box we are building (today's project).  We need to be able ensure that we are able to sterilize our wood dried in the solar kiln.  

Next week I intend to fabricate some hinges for the hot box doors and eventually make some for the kiln.  The kiln panel is heavy and the skid steer attachment that we bolted to it works well but the ground is not flat enough to enable it to be easily removed and installed so it really needs swinging doors.  I think that if it is convenient to open and close we will use it more.  The kiln itself does a good job of drying wood, it is just a PITA to load and unload.

It is almost too dry to burn here now - we have not had any rain in about 10 days.  We have enough slabs and scraps to make a Jakelike fire (Customsawyer).  

[WDH]

If it is a Jakelike fire, you will be able to see it from Miami. 

[terrifictimbersllc]

Do you mean this fire?

 

[LeeB]

I have not yet tried the T7's. I won a box of them at the last pig roast and have since lost the coupon for them.  >:(

[Magicman]

Lee, call Indy and talk to Sparks, (Rick). 

[LeeB]

I have one more place I haven't looked for it yet and then I may well do that Lynn.

[WDH]

Dennis, that is a bitty one. 

[LeeB]

I have not yet tried the T7's. I won a box of them at the last pig roast and have since lost the coupon for them.  >:(

Found the coupon today and got it in the mail.

[TimW]

When I ordered my mill, I ordered a box of Turbo 7s.  But after using over 7 blades in that box, I found out (while ordering some parts from WM) that just plain old 7s came with my mill.  So I had a box of Turbo 7s shipped to me ASAP.  I tried my first T7 blade yesterday and it is a difference of night and day.  Smoother cuts, and way less sawdust left on the blade.  I also could cut faster.  I love'em.  Who wants my plain 7s?
hugs, Brandi

[petefrom bearswamp]

Love the turbos dont want the 7s
But thanks anyway

[Crossroads]

I'm out of T7's right now, so on my job this weekend I took a box of 4's. I was really surprised at how much slower they were and it didn't seem like they stayed sharp as long. I really need to get my T7's sharpened and get another box of them. 

[TimW]

Love the turbos dont want the 7s
But thanks anyway

Guess I will use that on that 24 inch square oak cant I have that is full of nails!
hugs,  Brandi

[YellowHammer]

I've been real happy with the .055 T7's for my LT70 Wide.  It seems the normal 7's have much less room in their gullets and spill a lot more sawdust, which causes problems.  T7's cut noticeably faster and straighter.

I also agree that they seem to stay sharper, longer, maybe because of the reduced sawdust spillage.

On my LT40, I didn't see much difference between the two, on the LT70, it is very noticable.  

[LeeB]

How much difference in performance do you think the 39° back angle makes? Is it really a factor or is the deeper gullet the main improvement?

[YellowHammer]

I'm not sure about the observed effects of back angle, but the gullets in the standard 7's are quite shallow, and I liked that with my LT40 because it allows more metal in the band and improves stiffness. Spillage is acceptable in 18 to 24 inch logs, but in the wider cuts that I can do with the LT70 wide, the sawdust packs badly, and the only way to alleviate that is to feed very slowly, which causes problems of its own.  The Turbos have a much deeper gullet and the sawdust extraction is significantly better, especially in the wide, up to 34 inch cuts.  

[LeeB]

Just curious. I have ordered a box of T7's but do not have a cam for my cooks to match. Just looking at it I think I can achieve the same profile by using a 1/8 inch rock rather than a 3/8" and I have old cams that I can 'modify'. 

[terrifictimbersllc]

How much difference in performance do you think the 39° back angle makes? Is it really a factor or is the deeper gullet the main improvement?

39 degrees is how it gets the deep gullet.

[LeeB]

Wow, talk about customer service. I bought a cam from member Cutting Edge two years ago and had forgotten that it was for 7/40 and not 7/34. Got an email from Richard just now reminding me it what cam I had. 

[DWyatt]

I have cut mostly with 4° WM blades, but the last time I had to make a WM order I got a couple Turbo 7s, I run a 99 LT40 with the 25 hp Kohler. What I have noticed is that these T7s are fast and like everyone says, if I do not cut as fast as they want to go, I get the ripples (not waves) in the boards. This is great because I am okay with pushing them. 

However, the last Red Maple I sawed, I took a couple ~22" LE slabs. I had a heck of a time keeping the head moving fast enough without losing band speed. On the few slabs I cut the surface has those ripples, telling me that I am not cutting fast enough, but I couldn't speed up because I would notice that I was losing band speed. Went back to cutting 12"-18" boards with the same blade and it was business as normal (fast cutting and perfectly smooth surface finish). Just my observations with a tired 25 hp Kohler. I will definitely continue to use the T7s, knowing that if a customer or myself wants a bunch of wide boards, I will use the 4° bands that I have. As a side note, I did check my drive belt tension and that is not the reason I was losing band speed in the wide cuts.

[barbender]

It sounds like you hit the wall of not enough horsepower to provide the feed speed those blades require? I've got to get some of those T7s to try, it sounds like they would utilize the HP of my diesel engine👍

[Outlaw]

I experience the same with my 25 hp Kohler with the T7's as DWyett. Also a lot of chatter on the mill in a wide cut. Need more hp.