Used this sort of hole cutter, without the hydraulic bit, for holes in distribution boards and containment, they give a really clean cut. Looks like a cracking bit of kit.
I bought one of them units about 8 or 9yrs ago and modified it to pull seized diesel injectors out, I modified a load of the adaptors that come with the slide hammer injector removal kits and then made a 20mm piece of plate with loads of threaded holes in it and 4 lengths of M16 threaded bar so they can be adjustable legs so the puller can sit in any position and level on the cylinder head and once the ram has gone to its full stroke I just wind the legs through the steel plate so they touch the cylinder head and then pump ram again to the stroke of the ram and repeat until injector comes out, I only have to do it that way because when i bought the hole punch kit I couldn't see if the threaded hole went right through the ram in the eBay listing and when it came it didn't so had to build it the way I did.
I'm impressed as well. I was just looking at this two days ago. Great piece of kit. Great demo. We used similar with a spanner to cut tap holes out of stainless steel sinks, back in the day lol.
I have one also the dimple dies that fit it too! when your cutting your hole stop the minute you hear the snap then back out to see if that will give you the washer your wanting. If you go all the way to the bottom of the punch thats when you cut the washer in 1/2. give it a try use some scrap pieces to perfect your technic.
Ooh, a cookie cutter for your cooking videos! I'll have to see what size they go down to for instrument/control panels. Thank you for the tool tip. I hope your weekend is enjoyable so far.
Thanks John, great ‘real world’ review as usual. I’ll bet that, with a bit of fettling, that portapak can be used for other purposes as well. A bargain at that price.
Looks like a nice set. The last time I bought a Greenlee screw-together manual hole punch it cost north of the dollar equivalent of 300 UK pounds, and was heavy work to use. (It cut ONE size) If this set you reviewed sells for 150 UK pounds it's a bargain I think. Cheers John!
Maybe older versions of the Greenlee dies that don't split the slug would work if you can find any. I remember using those to make 4 or 5 holes in a panel depending on the thickness before having to stop to pry the slugs out. It was so nice when they changed to the split slug that would fall out on it's own instead. You can probably just turn or grind the punches down flat in a lathe to make flat washers.
Would need to be ground, as the steel is hardened. Or take a piece of hardenable steel, do the drilling and machining, and cutting the thread while soft, and machine to be a close fit to the existing die, with the cutting edge formed as a shallow cone to get a better edge. Then harden and temper, and finish off with a grinder to final diameter, and accept the thread will either need to be sloppy, or you use an external long nut on it to handle the load.
If you’re making your own tooling for keeping the middle bits, would it work better if you had a flat male part and scalloped female? Or would that just knacker the rest of the sheet for the subsequent washers? Just a thought!
Great piece of kit John, shame about stepped drill bit. Would be interesting to see how it copes with Aluminimum. Cheers, thanks for sharing. Stay well.
Nice tool,i reckon it could be modified for dimple dies,or using a mandrel of some kind to flare stainless exhaust tube🤔.the manual tube flare "tool" I bought was absolute shite. Look forward to seeing your mods to make it do what you need it to do. 👍👍
No denying that’s impressive, works spot on. A longevity concern may be with the internal “finish” in the Hydraulic cylinder while iv never seen or worked with the model you have there I have known “sealey brand” porta powers to fail very quickly at work and iv also seen “vevo brand” pulling porta power rams fail too ( that’s the 1 with the hole through the middle to pull stuff I’m taking about ) When we opened these to re seal them we observed a very course almost serrated finish on the surfaces which was distorting the seals
That's helpful about the Vevor hollow rams, I've been looking at them for pulling pins on our timber harvesters after an incident with a 9lb sledge and my wrist ! I built a 40 ton hydraulic press with an import two speed ram unit, as you say, they've just "chrome" plated over a roughing cut, but at least the oil leaks stop the press from rusting !
I've just bought one John. Mine was £107.99 with your discount for the 15t kit. As well as punching holes, I'll make some swaging dies and also see if I can adapt it for pulling bushes on cars. I have a manual bush kit that uses the impact gun but I can see this being much more controlled. The 20mm stroke wouldn't be a problem as I plan on using the acme thread and a nut so I can take a couple of bites at bushes. At £108 it's a chuffing bargain.
Bizarrely, I was looking at one on the Vevor site and as I read your post, the price dropped from £115.99 to £107.99. I then got it for £102.99 with the John Mills code.
Nice video as usual. I cannot bear myself to comment your nice dialect. Swedes have many different dialects as well, however more standardized and uniform. For example, in Norway, a person from Oslo might have severe problems to understand a person from Bergen, in the same country. And for a Swede to talk to an old woman in Hardanger-vidda is out of the question, despite the fact standard Norwegian and Swedish is mostly mutually intelligble. In writing it would work way better.
Don't know how they do it for the money? Slave labour/cheap labour and cheap Russian oil might have something to do with it. Love the channel John but not the cheap Chinese kit.
Used this sort of hole cutter, without the hydraulic bit, for holes in distribution boards and containment, they give a really clean cut. Looks like a cracking bit of kit.
I bought one of them units about 8 or 9yrs ago and modified it to pull seized diesel injectors out, I modified a load of the adaptors that come with the slide hammer injector removal kits and then made a 20mm piece of plate with loads of threaded holes in it and 4 lengths of M16 threaded bar so they can be adjustable legs so the puller can sit in any position and level on the cylinder head and once the ram has gone to its full stroke I just wind the legs through the steel plate so they touch the cylinder head and then pump ram again to the stroke of the ram and repeat until injector comes out, I only have to do it that way because when i bought the hole punch kit I couldn't see if the threaded hole went right through the ram in the eBay listing and when it came it didn't so had to build it the way I did.
Sounds like a really good use for it.
Mate, that sounds like a brilliant mod. I really like making tools like that.
I'm impressed as well. I was just looking at this two days ago. Great piece of kit. Great demo. We used similar with a spanner to cut tap holes out of stainless steel sinks, back in the day lol.
Excellent no nonsense review John. Just bought one using your 5% discount, thanks.
Good review, John. You can also use these knock out punches with dimple dies for stiffening panels.
I have one also the dimple dies that fit it too! when your cutting your hole stop the minute you hear the snap then back out to see if that will give you the washer your wanting. If you go all the way to the bottom of the punch thats when you cut the washer in 1/2. give it a try use some scrap pieces to perfect your technic.
Ooh, a cookie cutter for your cooking videos!
I'll have to see what size they go down to for instrument/control panels. Thank you for the tool tip. I hope your weekend is enjoyable so far.
I'm really looking forward to you making the new tooling John. I'm ordering one.
Good Review John, Looking forward to seeing that custom tooling...
Cheers....
Thanks John
Looks like it works good!
Nice little toy. Looks like it works very well.
Thanks John, great ‘real world’ review as usual. I’ll bet that, with a bit of fettling, that portapak can be used for other purposes as well. A bargain at that price.
That looks alright John, it would be interesting to see if it would work with a set of dimple dies.
Looks like a nice set. The last time I bought a Greenlee screw-together manual hole punch it cost north of the dollar equivalent of 300 UK pounds, and was heavy work to use. (It cut ONE size) If this set you reviewed sells for 150 UK pounds it's a bargain I think. Cheers John!
Maybe older versions of the Greenlee dies that don't split the slug would work if you can find any. I remember using those to make 4 or 5 holes in a panel depending on the thickness before having to stop to pry the slugs out. It was so nice when they changed to the split slug that would fall out on it's own instead. You can probably just turn or grind the punches down flat in a lathe to make flat washers.
Would need to be ground, as the steel is hardened. Or take a piece of hardenable steel, do the drilling and machining, and cutting the thread while soft, and machine to be a close fit to the existing die, with the cutting edge formed as a shallow cone to get a better edge. Then harden and temper, and finish off with a grinder to final diameter, and accept the thread will either need to be sloppy, or you use an external long nut on it to handle the load.
Nice Punch !
If you’re making your own tooling for keeping the middle bits, would it work better if you had a flat male part and scalloped female? Or would that just knacker the rest of the sheet for the subsequent washers? Just a thought!
Great piece of kit John, shame about stepped drill bit. Would be interesting to see how it copes with Aluminimum. Cheers, thanks for sharing. Stay well.
Nice tool,i reckon it could be modified for dimple dies,or using a mandrel of some kind to flare stainless exhaust tube🤔.the manual tube flare "tool" I bought was absolute shite. Look forward to seeing your mods to make it do what you need it to do. 👍👍
No denying that’s impressive, works spot on.
A longevity concern may be with the internal “finish” in the Hydraulic cylinder while iv never seen or worked with the model you have there I have known “sealey brand” porta powers to fail very quickly at work and iv also seen “vevo brand” pulling porta power rams fail too ( that’s the 1 with the hole through the middle to pull stuff I’m taking about )
When we opened these to re seal them we observed a very course almost serrated finish on the surfaces which was distorting the seals
That's helpful about the Vevor hollow rams, I've been looking at them for pulling pins on our timber harvesters after an incident with a 9lb sledge and my wrist !
I built a 40 ton hydraulic press with an import two speed ram unit, as you say, they've just "chrome" plated over a roughing cut, but at least the oil leaks stop the press from rusting !
I've just bought one John. Mine was £107.99 with your discount for the 15t kit. As well as punching holes, I'll make some swaging dies and also see if I can adapt it for pulling bushes on cars. I have a manual bush kit that uses the impact gun but I can see this being much more controlled. The 20mm stroke wouldn't be a problem as I plan on using the acme thread and a nut so I can take a couple of bites at bushes. At £108 it's a chuffing bargain.
Bizarrely, I was looking at one on the Vevor site and as I read your post, the price dropped from £115.99 to £107.99. I then got it for £102.99 with the John Mills code.
Even better
@@bobuilt10 I agree, but it is very strange how the prices change like that.
This bit of kit has a future cooking video use. Would make an amazing cookie cutter don't you think?
They sure are handy.
Is there a set of dimple dies that match the sizes cut out by these punches? These will be great for automotive fabrication.
Just wondering if you would want a pilot hole in the dimple.
I just got one from the Vevor site for £102 thereabouts..reduced from £107 with John Mills' discount code.
I could see these being really good if a dimple die set was available
brill
Grand tool john, could you modify the dies to for your hydraulic press, maybe a quicker process, 🤷🏻♂️
Nice video as usual. I cannot bear myself to comment your nice dialect. Swedes have many different dialects as well, however more standardized and uniform. For example, in Norway, a person from Oslo might have severe problems to understand a person from Bergen, in the same country. And for a Swede to talk to an old woman in Hardanger-vidda is out of the question, despite the fact standard Norwegian and Swedish is mostly mutually intelligble.
In writing it would work way better.
My biggest worry is how long the dies will last. Not a problem for your use, but it could be for others.
I imagine cleaning the dirt off the steel before punching it (ahem...) and a little lube would help quite a bit.
Could these be used with dimple dies
Don't worry read it can in the comments. Keep up the fantastic work
How is this better than a unibit?
Try cutting copper
Mine arrives tomorrow and I only paid £107 for it.
The pump works wery wel, but the stepbor its not anivable fore harder metall than Aluminium , cobber,etc or Plastic in Polycarbonate
It cuts stainless steel
400mm is 15" john, not 4".
But never give a bad review
They do it at that price because it was made by a 4 year old in china who gets paid 1yen an hour :-)
At least he's not sitting around playing video games.
NOT? (playing video games)...@@65cj55
Well judging by the stitching on my trainers, they should sack the little sods.
He's learning a trade.
Shite
Great constructive comment .
Would you like to elaborate .
What we do for a few pieces of gold
Don't know how they do it for the money? Slave labour/cheap labour and cheap Russian oil might have something to do with it. Love the channel John but not the cheap Chinese kit.