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General Tools Punzone centrale automatico per impieghi gravosi n. 78 - Punzone per chiodi per segnare e incidere - Utensili per macchinisti Acciaio per impieghi gravosi

Brand:General Tools

3.5/5

€
57.94

Punzone centrale automatico, diametro corpo 0,625 pollici, lunghezza 5,63 pollici, punta sostituibile, regolabile, corpo in acciaio

Quantity
Aggiungi al carrelloCompra subito

EAN: 0080050277164

Categories: Strumenti e miglioramento della casa, Utensili elettrici e manuali, Utensili manuali, Pugni, Pugni centrali,

STRUMENTI GENERALI: Da molti anni siamo leader riconosciuti nell'innovazione, nella progettazione e nello sviluppo di strumenti di precisione specializzati. Incoraggiamo gli artigiani, gli artigiani e i fai-da-te a lavorare in modo più intelligente, misurare meglio e aumentare la produttività. IMPUGNATURA PER LE DITA ZIGRINATA: consente una presa robusta, maneggevolezza e meno scivolamento, evitando potenziali lesioni. Misura 6 e ha una finitura in ossido nero resistente alla ruggine. Aggiungilo ai tuoi accessori e ad altri elementi essenziali dell'hardware. TENSIONE DELLA MOLLA REGOLABILE: ideale per metalmeccanici, macchinisti, professionisti della riparazione automobilistica e fai-da-te, questo punzone centrale caricato a molla ha un meccanismo automatico che colpisce con una pressione verso il basso in modo da non aver bisogno di un martello. PUNTA IN ACCIAIO TEMPRATO SOSTITUIBILE: Fabbricato in acciaio resistente, il nostro pratico punzone in metallo ha una punta in acciaio a forma conica che ti consente di praticare fori in sicurezza nella posizione esatta senza scivolare e danneggiare la superficie di lavoro. CORPO IN ACCIAIO: questo indispensabile punzone in pelle pre-foratura può incidere, picchettare e preparare fori per chiodi e viti. È facile da usare e la tensione della molla con una sola mano si regola per colpi leggeri o pesanti e marcatura su superfici in legno e metallo.
Batteries Required? ‎No
Country of Origin ‎China
Customer Reviews 4.5 4.5 out of 5 stars 1,368 ratings 4.5 out of 5 stars
Domestic Shipping Item can be shipped within U.S.
Included Components ‎Unit^Instruction Guide
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Is Discontinued By Manufacturer ‎No
Item model number ‎78
Item Package Quantity ‎1
Item Weight ‎4.8 ounces
Manufacturer ‎General Tools
Material ‎Steel
Number Of Pieces ‎1
Part Number ‎78
Power Source ‎Hand Powered
Product Dimensions ‎8.63 x 3.06 x 1.63 inches
Style ‎Heavy Duty Steel

3.5

12 Review
5 Star
74
4 Star
13
3 Star
5
2 Star
3
1 Star
6

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Scritto da: Jay
Quality has gone down some
Updated: I have enclosed my fix at the end of the review. This thing is working well and I hope I just got a Friday made unit. The model 78 has a very strong spring compared to the 79. So I will reserve the heavy duty model for thicker metal and save the smaller one for thinner materials and plastic. I still want to order another model 79 because I used it so much. The review plus update. I had one of these for years. Picked it up from a SnapOn truck around 2000 or 2001 and it has been one of my favorite tools since then. I had to reduce the stars due to the state this thing arrived. I still love these especially because the tips are replaceable. For years I thought I had a Sterrett brand (I probably paid that much on the truck) until I went to buy another one and found the tip was different from the general tools one. Because I used it on so many projects and carry it between shops and tool boxes I thought I should treat myself to a second one. (Because it was on sale) I did not have my original handy to look at the number (it was in a different work area) so I just picked this one. This looks a lot like my original but it is a lot bigger. The original must be a different model. This one came in a sealed package covered in rust protective oil. So I took it apart, cleaned off the packaging oil and lubricated it with the same oil I use on the original. While doing so I found this thing had a lot of burrs. I suspect that it was tested with out the tip since the metal was peened over near where it threads in the punch shaft, it was also burred where it interacts with the anvil/hammer thing. I polished those up a little since this thing was very hard to push when I opened the package. It was still very stiff so I took it back and greased the anvil/hammer thing with low viscosity grease that works in cold weather. This helped quite a bit. The over all machining was very rough. My original was not pretty but this had a lot of galling from the machine tool engaging it outside and in so I'm thinking over time it will get better. Hoping! I was rather confused when this did not work at all when adjusted to its heaviest load, I had to back of the adjustment a little to get it to function. I did some tests on softer steel and it did leave a mark. The larger tip did not do as well as the smaller tip, but it did leave a mark. Now that is cleaned up some, it works fairly well but frankly... about the same as the original, I do not see how it is "heavy duty" in comparison. I still have to make multiple strikes to get the same depth. I will keep this one, I may purchase the same model that the original is since somewhere in a tool box nearby is a whole bag of replacement tips for that size. I just wish they kept up on the quality. Update: This thing stopped working correctly again. So I pulled it back apart and compared it to my Blue Point model 79 version (the smaller model) what I found was that the inside of the handle had grooves cut from a bad setup or bad bit between the ledge that triggers the release of the punch and the hammer, which I gave some attention to with 400 grit sandpaper spinning on a drill shaft. I also found that radius on the trigger mechanism did not sit flush with the hammer/anvil thingy. I found a metal chip between the spring and the little part which was causing a lot of the problem., I did not remove that when I greased and oiled it. The only problem now is the little screw that holds the spring is sitting in a hole with stripped threads... if it holds it will never be a problem. It works great now. The spring is definitely stronger and harder to push thames the smaller 79 version, however it leaves a nice wide center punch now in comparison. I tried both on a galvanized pip cap that was laying around, I adjusted the spring tension to about the same and the 78 is much wider than the 79.
Scritto da: hairy1xs
Removing centers from 1/4 rivets
A lot of things are put together using 1/4 rivets which are a pain to remove as the center pin doesn’t like to be drilled. One or two pushes on this will remove center pin allowing easy and centered drilling.
Scritto da: E. Sterling Holland
Great tool
Excellent quality
Scritto da: Jon Marshall
Fantastic
Great punch for multiple uses
Scritto da: Ray M.
2nd responce This is NOT a precision Instrument
2nd Responce I was pleasantly surprized once I shapened the point up and compared the indent with my UK Eclipse Automatic Center punch from almost 60 Years ago the indents are almost Identical. If the body was of toughened steel I would have given it a 5 star rating. First responce it looked nice but not as heavy as I would have expected, But I think this tool is mainly for DIY and wood work use. So well priced I was also suprised to find the tool was not sharp. I would like to add that I have net tried the tool as yet, But when I do, I will stretch spring to improve its performance on Metal. My Background is a Tool Maker and lost my one several years ago. (Just Found it) So I speak as an experenced user of this type of tool.
Scritto da: Aja
Good Tool
WORKS FINE. ,No problems in use almost daily
Scritto da: Gene Littig
center punch
does a good job of setting a centering dent in metal
Scritto da: stu
Came bent had rusty oil leaking and stripped threads on tip
I’ve got Starrett auto centre punchers and these general auto centre punches and obviously these are not as good, infact I purchased the steel option punch above and when it came there was rusty oil coming down the bent shaft, yes that’s right, it came bent. I had to strip it down degrease it and get rid of the rust which was caused by the adjustable spring on top and I also complained and and Amazon have sent me a replacement and the replaceable tip on the first one came half hanging off and after inspecting it the threads were stripped so it just spins in the hole so I’ve used blue thread lock which has sorted it out. My point is how did this pass QC (Quality Control) as it’s a mascot to this companies general workmanship and craftsmanship and pride so shows off there handy work. If this is a image of who these people are and there standards then it give people reason to belive that all of there tools are in this decrepit state or are of poor quality. It’s the Chinese ethic of quantity not quality as with everything they peddle to us westerners ! Crap !
Scritto da: Jeffo
Melhor do que os que você encontra no ML e China em geral
O produto é muito bem construído, qualidade superior aos que comumente vem da China (mesmo que este seja produzido lá, se destaca). Ele é bastante duro para apertar e disparar o puncionamento mas funciona todas as vezes (diferentemente dos comuns que começam a perder o disparo). Para melhorar um pouco a utilização, instalei uma manopla de madeira feita a partir de um puxador de madeira cambará, barato e fácil de achar. Ela encaixa no topo e torna muito mais fácil usar o puncionador.
Scritto da: Amazon Customer
Not spring loaded
Its not spring loaded, you have to push down on it with force, which kinda makes it pointless since you can just get a regular pointed pick. it also cause you to loose some accuracy as apposed to a spring loaded one where you can hold it directly in place with one hand while loading it with the other. all in all though, it is well made and does the job.
Scritto da: kd
disappointment
when i first took it out of the package i was initially impressed by the quality, and that's about all the good things about it. first thing i noticed when using it is that it feels horrible, the action to compress feels and sounds crunchy. that might resolve itself once it wears more, but i dunno if i'm ever going to use it enough for that to happen. first thing i tried it on was mild steel. no bueno. it barely touches it even on the heaviest setting. next, i believe someone mentioned in another review that it's great for setting nails. i tried setting an 1-1/4" finish nail in some fir baseboard, not a chance. next thing i tried was wood, it marks wood well. know what else marks wood? anything with a point. take a nail or screw and just press it into the wood with your hand, it's about the same effort and yields same result. you have 10+ things sitting around you right now that can do what this can. i can't see a situation where this would be my go to. anything it can do, i already have something that does it better. just to try and get some usage out of it, i might try using it as a steel scribe. if it sucks at that too, i'm probably just going to use it with a hammer like a normal punch until it explodes in my hand. update: had it about 2 weeks now and it's the nicest useless thing i own. just for goofs i tried it as a scribe and i tried depressing it and smacking it with a hammer. it's a mediocre scribe at best. after a couple of love taps with a hammer i could tell it's only a matter of time before the back cap breaks and the insides become outsides.
Scritto da: Amazon Customer
Not good for metalworking
Spring is far too weak to mark metal of any kind, and the point is too small. It leaves a tiny tiny indent which is no use and causes drill bits to wander outside of the marked point, defeating the whole purpose of the tool. Fit and finish is very poor as well with crunchy threads, and just feels like a toy more than a tool. On top of that it stopped firing after using it to mark 6 holes, and will stop working intermittently. Definitely avoid if you plan on using it for metal, or more than once for that matter. Tossed it in the scrap bin at work

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