Question about Stanley Self Retracting Utility Knife

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Have a new Stanley InterLock retractable knife (10-379). Unscrewed the back, making two pieces. 3 blades included. Cannot figure how to get blade and slide mechanism in the correct positioning with only the sketch on back of packaging. I am not dumb/stupid...just a female who knows next to zero about hand tools, and other manly work items. Ha. Is there some written instructions, or more elaborate sketches to get the knife back together, blade in place, and ready for use? Thanks, Nancy

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How to open stanley fatmax knife 10-778 TO CHANGE THE BLADE. thank you


How do I change the blade on the quick change/instant change knife? Warning: Blades are sharp and can cause serious injury. Be extremely careful when handling blades. Wear eye protection and dispose of used blades properly, such as wrapping in duct tape.


FULLY EXTEND THE BLADE.

Press down and forward again on the slide button until the button is in the full front of the top slot (0 through 3 in the below picture).

Note- the blade must be extended beyond the 3rd detent position. This will cause the slide button to remain in a down position, allowing the blade release button to operate.

PRESS AND HOLD THE BLADE RELEASE BUTTON ON THE FRONT SIDE OF THE KNIFE. (Step 4 in the below picture)

Note- if the blade is not fully extended beyond position 3) , the blade release button will not work.

Remove the old blade carefully.
Insert new blade.

NOW, RELEASE THE BLADE RELEASE BUTTON.
ENSURE THE BLADE IS LOCKED IN PLACE. If the blade does not retract, try carefully giving a slight tug on the blade to reseat.

Jul 13, 2011 | Stanley Fatmax Xtreme Retractable Utility...

2 Answers

I cannot figure out how to put a blade in my Stanley FatMax fixed blade utility knife. There are no instructions with the knife.


at the handel end it will pull apartthen slide the whats left of the old blade and put new won in its place just do it slowly so you dont forget how it goes

Apr 21, 2011 | Stanley Utility Knife

1 Answer

Describe how you put a blade in FatMax model 10-778


The model in your picture is a fixed blade utility knife (model 10-816). Your question asks for instructions for model 10-778, which is a retractable knife. I'll guide you through the 10-778 which you asked for, if you need instructions for the pictured 10-816 please re-post the question.

Push the thumb slide forward as far as it goes exposing the blade. Press the blade change button on the side of the knife (the small button on the left side near the blade) and pull out the old blade.
Insert the new blade and slide thumb slide back to fully engage blade in the internal lock.

Dec 26, 2010 | Stanley Fatmax Xtreme Retractable Utility...

1 Answer

Cant put the thing back together after putting in new blade !!!fat max knife


some stanley knifes require stanley blades only, or make sure the clip blade is in is seated in the grove completely.

Dec 23, 2010 | Stanley Fatmax Xtreme Retractable Utility...

1 Answer

I unscrewed Stanley 10-379 Interlock retractable knife and now I don't know how to put back the gizmo that fell out or the three blades that came with it.


Google: how to change blade in Stanley 10-379 utility knife. Stanley website shows how knife & blade look on the outside. Put it together so it looks like that. Sorry, but ain't don't know how to send the picture to you.

Oct 21, 2010 | Garden

1 Answer

How do you load a new blade?


At the back end of the knive (the curved end) press the black piece through the yellow rounded part and the yellow front and the black back will part, now slide the yellow part back to reviel the blade folder. Fit new blade then refit the yellow part on top of the black part and slide the yellow part foward to lock it back in.

Jul 31, 2010 | Stanley Utility Knife

3 Answers

Just purchased a Stanley FatMax 10-778 retractable knife. Cannot figure out how to load the blade for use.


1. Make sure the side lock is unlocked.
2. Push the thumb tab all the way to the front of the blade handle.
3. Insert the blade in the opening, you may notice two notches on the top side of the blade.
4. Press the small blade release button as you slide the blade into the knife. You may have to jiggle up and down to get the two notches on the blade fully into the handle.

If properly inserted, the exposed area of the blade should look very close to an equilateral triangle.

make sure both notches of the blade are inside the handle. They notch into the thumb lever.

good luck

Mar 20, 2010 | Stanley Fatmax Xtreme Retractable Utility...

1 Answer

I brought a stanley fatmax retractable knife, have no idea why the blade is not coming out, trying to figure out if i did something wrong like putting the blade in the wrong spot.. this is the only time...


Are you using Stanley Blades or off brand? Hey, I use off brand but sometimes it does make a difference. Second, make sure the blade slider is clean. If you were cutting shingles, for instance, the tar gets in there and screws things up.. try WD-40 spray it liberally all over the blade slide and buttons. If that doesn't work and you purchased it at a Menards store, I can speak of experience they'll replace it no hassle.
I hope I helped

Jan 09, 2018 | Stanley Fatmax Xtreme Retractable Utility...

4 Answers

Stanley 10-788 how to change blade


Push the top metal button all the way foward as if pushing the blade out to it's (farthest) 3rd setting. Then push foward and down one more time which locks the mechanism down. Push and hold the yellow side button as you insert the blade. When the blade locks in all you have to do is release the yellow button and return the top slide to it is fully retracted home. The blade is loaded

Jan 14, 2010 | Hand Tools

2 Answers

Stanley 10-777 utility knife: I need to reinsert the retractable blade slide back into the knife body. I try but the knife won't close.


I had the same trouble. The blade holder was out of the knife and would not go back in. I fixed it this way: open the screw knob all the way to the least tension. Slide the two parts open but not all the way- there is a tab on the blade holder that gets in the way if you try to drop it in at the fully open position. With the two halves SLIGHTLY open- slide the blade holder in making sure that the tab is seated in it's slot. Depress the thumb tab and bring it to the most forward position and the two halves should be able to be seated together again.

Oct 27, 2009 | Stanley Hand Tools

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