Straight cuts and an insert are the way to go if welding on a big truck frame, this isn't a light c channel hotrod frame that doesn't have much surface area. if the weld isn't strong, it don't matter what kind of cut you make its going to crack. semi-truck frames twist with immense loads, therefore if you do a 45 degree or anything other than a straight vertical cut you are subjecting the weld to twist over a wider area of the frame and it will actually crack easier. Big truck frames are heat treated so 95% of anyone welding on them will make the cut section brittle so it makes no sense to make the brittle section any larger than it needs to be. The way he did it in the video is how most shops do it, is stronger than it was originally as a single frame and achieves his goal.
I thought that the way to cut to welding it is Z but it looks great , this is no first time that i see this way , if it could be bad , nobody do iton this way
@@turbo1438 A proper weld is stronger than parent metal. The General Motors upfitter manual shows vertical splices and those are "factory best practices". My pipeliner welding instructor/ranch owner does frames on the side when he's off the road and all those are butt welds. He could weld the proverbial cat's ass to a plate glass window if they made filler rod for cat. Heat treated frans cab be welded safely with proper preheat and slow cool down. I'm just a mechanic who welds but I find the smart guys and follow them around. Works for nearly everything!
Guys, to each his own…. I’ve built 8 extendos now over ten years, the Z looks great but at the e d of the day, it’s about what works for each person. Strait cut works for me, mag drill all unused holes thru the sleeve. Put hard grade bolts, and move on……
@@darylm3411 you need to know the truth to tell it! Straight cuts, every day, all day. If done right, I will not break. We put 7 FEET in semi truck frames to make them into fertilizer tenders. Straight cut. Have built wreckers and oil field trucks. Can't find trucks more abused than those 3. Straight cut buddy! YOU are the one needing to learn!
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Straight cuts and an insert are the way to go if welding on a big truck frame, this isn't a light c channel hotrod frame that doesn't have much surface area. if the weld isn't strong, it don't matter what kind of cut you make its going to crack. semi-truck frames twist with immense loads, therefore if you do a 45 degree or anything other than a straight vertical cut you are subjecting the weld to twist over a wider area of the frame and it will actually crack easier. Big truck frames are heat treated so 95% of anyone welding on them will make the cut section brittle so it makes no sense to make the brittle section any larger than it needs to be. The way he did it in the video is how most shops do it, is stronger than it was originally as a single frame and achieves his goal.
I thought that the way to cut to welding it is Z but it looks great , this is no first time that i see this way , if it could be bad , nobody do iton this way
Looks good, doing it right.
Not done right! Straight cuts are vertical pressure points. For every degree it’s cut towards a 45 adds 5 tons of resistance!
You got me on the has tank
Gas tanks shit that ISX must shoot flames out the stacks lol. Wanna see the finish product please keep us updated. Thanks
Beautiful
Frame should be cut at 45 know?
Are you going to add another frame rail inside the frame rail?? Have it at least 5ft on both sides of the cut??
Why a straight cut and wield? Z cut or angle is safer and stronger. Im just saying.
That's how I do it. I figure it is not the cut that holds it together, more so the weld. Thanks for asking!
Yes 💯cent man
What about an arrow cut?
I agree. a angle or z provides more weld surface.. ie stronger weld.
@@turbo1438 A proper weld is stronger than parent metal. The General Motors upfitter manual shows vertical splices and those are "factory best practices". My pipeliner welding instructor/ranch owner does frames on the side when he's off the road and all those are butt welds. He could weld the proverbial cat's ass to a plate glass window if they made filler rod for cat. Heat treated frans cab be welded safely with proper preheat and slow cool down. I'm just a mechanic who welds but I find the smart guys and follow them around. Works for nearly everything!
I’m wondering if you can extend my chassis on a 2007 Chevy C7500?
Nice job brother. Do you have a email I would love to get this done on my 379
Brother did he contact you I want work done
@@guerciotti21 no sir
I thought it was illegal to cut or weld or drill the frame
not true it just has to be done correctly
Frame was done completely wrong
Odd hundreds of thousands of trucks are done just like that and zero issus..just because you don't like it doesn't mean it's wrong..
whats wrong with it?
Welds are not flexible, thus they can crack when the frame flex, they need to be plated and bolted and of course welded, and the cut is totally wrong
Jessie is too long
🔚⬅️
Should have been a z cut. That frame is gonna be weak and probably crack.
@Daryl M did you do a Z cut on yours? Let's see your work, azzhole.
@@turbo1438 just telling you the truth, maybe you should learn to do things the right way.
@@darylm3411 okay, let me ask you why you think a z cut is better than a straight cut?
Guys, to each his own….
I’ve built 8 extendos now over ten years, the Z looks great but at the e d of the day, it’s about what works for each person.
Strait cut works for me, mag drill all unused holes thru the sleeve. Put hard grade bolts, and move on……
@@darylm3411 you need to know the truth to tell it!
Straight cuts, every day, all day.
If done right, I will not break.
We put 7 FEET in semi truck frames to make them into fertilizer tenders.
Straight cut.
Have built wreckers and oil field trucks. Can't find trucks more abused than those 3.
Straight cut buddy!
YOU are the one needing to learn!