Grab Your Next Assisted Opening Knife At Grindworx

Bladeplay is now grindworx banner

Our spring assisted knife retail store, Bladeplay, has rebranded into Grindworx to better introduce the brand’s goals, message, and culture. This includes some better values on spring assisted knives and a better way to browse the selection.

Bladeplay has been a massive source of assisted opening knives since 2003 and has flawlessly provided fans with a variety of styles, affordable prices, and fast shipping. Grindworx, previously its own damascus tools retailer, was able to merge with Bladeplay with complete synergy given its current line of tools complementing Bladeplay’s line of affordable knives. As a single brand, they are able to better provide you the latest and greatest in assisted opening knives.

All Your Same Great Spring Assisted Knives

All your affordable spring assisted knives found on Bladeplay are available to you on Grindworx. With its expanding collection of assisted knives, find better values on all their products and experience the ease of use of the Grindworx website. Find all your favorite assisted opening knife brands and styles like:

Schrade’s Old Timer Ironwood Spring Assisted Knife

Schrade's Old Timer Ironwood Spring Assisted Knife

Gerber’s Fast Draw Spring Assist Knife

Gerber's Fast Draw Spring Assist Knife

Buck’s Quickfire Spring Assisted Knife

Buck's Quickfire Spring Assisted Knife

Browse more assisted opening knives at!

Anatomy of a Manual / Spring Assisted Folding Knife

Anatomy of a Manual / Assisted knife

Anatomy of a Manual / Spring Assisted Folding Knife Manual knives are legal in most areas, which means they are extremely common. Often, this type of knife is also recognized as a “pocket knife.” Spring assisted knives are roughly the same as manual knives, but they have a spring inside the handle that helps deploy the blade much faster. Spring assisted knives typically have a … Continue reading

Combat Ready Knives Green Bomber Spring Assisted Knife

This spring assist is a solid knife at an affordable price. The grooved aluminum handle along with its dark green color give this knife a sleek look that can’t make you think anything other than “combat ready.” The grooves also add some gripping, which is beneficial on a smooth handle. The blade is easily deployed with one hand by using either the thumb stud or … Continue reading

Benchmade Volli Knife Axis Spring Assisted 1000001

Benchmade has yet another new spring assisted knife. The Volli is a fresh twist on Benchmade’s spring assisted knives. While this Benchmade is effective as ever, this knife brings with it a new look. The G10 handle is contoured and textured to provide maximum comfort and control. The Volli features the AXIS-Assist locking mechanism and a drop-point blade with an ambidextrous dual thumb-stud that allows … Continue reading

How does a Spring Assisted knife work?

The difference between automatic knives and spring assisted knives is how the blade is deployed. An automatic knife deploys the blade on its own (no exterior finger force) with a trigger/button. A spring assisted knife needs an external force to engage the spring. The spring mechanism in a spring assist knife is quite simple. There may different variations of the mechanism but in essence they’re all the … Continue reading

How to Care for your Spring Assist Knife

My blade sticks; it doesn’t open as smoothly or as quick as it use to.

My knife is starting to rust; I thought my knife was made out of stainless steel…what a piece of [fill in blank]!

My blade can’t slice through anything anymore; is it time for a new knife?

I just spent $$$ on my knife and I want to keep it nice: what do i do?

Above are possible scenarios on why you are reading this post: You need to know how to take care of knife and to take care of it well. Proper maintenance and care of your knife will lead to many years of good reliable cutting and slicing. Your [enter amount] investment should last you for as long as you take care of your knife. Keep in mind a cheaply made knife will eventually (whether immediately or soon) fall apart if put under rigorous use.

There are five easy steps for proper care and maintenance. How frequently you need to maintain your knife depends on how often and how hard you use your knife. Follow these steps regularly  and you will enjoy using your knife for a long time.

1. Keep your knife dry.

  • The blade (especially the edge) and metal parts of the knife can rust if exposed to .

2. Keep the pivot lubricated with a dry lubricant. Tuff Glide is a common dry lubricant used by knife manufacturers, retailers and consumers.

    • With the knife closed put a drop of dry lubricant on either sides of the pivot.
    • Open the blade, place a thin bead of dry lubricant on both sides of the knife along the pivot.

Work the lubricant into the pivot by opening and closing the knife.

3. Keep your handle lint and dirt free. Use canned air or Remmington’s Rem Oil to blow out the trapped dirt/lint.

4. Keep your blade sharp. A dull knife is a useless knife. A dull knife is also a dangerous knife.  There are many different types of blade sharpeners. I recommend the Spyderco Sharpmaker. It’s easy to use; it can accommodate most knife lengths; and it’s a great value. Below are other knife sharpener options:

5. Tighten the screws on your knife regularly. There are toolkits that specifically for knife screws: The Benchmade Folding Torx & Screwdriver Tool Kit with Knife Sharpener and the Harley Davidson Black Box Knife Service Kit offer the  widest range of tool bits for your knives.

  • Try Vibra-Tite VC-3 to minimize adjustments to your knife.
  • If you don’t want to adjust your knife, you can buy Vibra-Tite Permanent Strength Threadlocker Gel or use a bit of nail polish to permenantly secure the screws in place. (Unscrew the screw, dab some nail polish on the threads near the tip of the screw, screw it back in and let dry.)



CRKT Spring Assist Knives

Columbia River Knife & Tools (CRKT) is based in Tualatin, Oregon. It was founded by Paul Gilespie and Rod Bremer. Gilespie and Bremer both developed their expertise in the knife manufacturing field while working for Kershaw Knives. They left Kershaw to found CRKT in 1994 with Pete Kershaw’s support and best wishes. CRKT truly took off and assured its future with the introduction of their KISS (Keep it Super Simple) knife in the 1998 Shot Show. The KISS knife, a small folder designed by Ed Halligan, was sold out within the first opening of days the Shot Show. They sold 4-5 times the products original production numbers and had to triple their production efforts to keep up with the demand.

The company produces a wide range of fixed blades and folding knives, multi-tools, sharpeners and carrying systems. CRKT has collaborated with many well-know custom knife makes: Ken Onion, Harold “Kit” Carson, Allen Elishewitz, Greg Lightfoot, Michael Walker and the Graham Brothers to name a few. Though based in the USA many of their products are produced overseas in China and Taiwan. CRKT products are covered by exceptional warranties.

If you’re looking for a good budget knife, a CRKT knife is a great choice.  For its price range, a CRKT knife is definitely a knife not to overlook! Might I recommend a few CRKT spring assist knives. Note: All these knives retail between $69.99 and $99.99. You can find great deals on  CRKT knives and more at

My Tighe

CRKT My Tighe Knife @ BladeHQ.comThe CRKT My Tighe is an affordable production knife of the popular Brian Tighe custom frame-lock folder. It has an uniqe blade that features asymmetrical spine facets, high-hollow grind and deep belly with re-curve. A frame-lock folder, this knife features a removable black Teflon-plated pocket/gear clip. The My Tighe knives have the OutBurst™ assisted opening mechanism, which instantly springs the blade fully open after you have opened the blade 30 degrees; and dual ramped thumb studs allow the My Tighe to be quickly opened with either hand.

Lift Off 2

CRKT Lift Off 2 Knife @ BladeHQ.comThe CRKT Lift Off 2 knife is for those who want a bit of style and shine in their personal carry. The Lift Off 2 features an InterFrame build with stainless steel liners, one locking, with textured black Zytel scales.The AUS 8 stainless steel blade is a satin finished modified drop point design with a notched and swedged top edge and a high hollow grind. You can choose from a plain blade or a partial serrated blade.

The Lift Off 2 utilizes CRKT’s OutBurst assisted opening with their patent pending Fire Safe mechanism. When closed, the blade is safely locked by the Fire Safe pin. It cannot be opened until the safety button on the end of the thumb stud is firmly depressed and the thumb stud is nudged outward. Just press and nudge for instant lift off. Caution: When closing the knife, always press firmly to fully close the blade, and be sure the Fire Safe pin locks into place securely with an audible “click”.

Fire Spark

CRKT Fire Spark Black Knife @

The CRKT Fire Spark is a heavy-duty tactical folder built for law enforcement and military professionals, although it also makes a fine general-purpose sport and work folder for those who want to carry a larger knife.The Fire Spark combines CRKT’s OutBurst® assisted opening with their Fire Safe™ mechanism for reliable, safe and solid performance. The blade is locked by the Fire Safe pin and locks firmly open via the InterFrame build with a stainless steel liner lock.  The Fire Spark features a CNC machined 6061 aluminum handle with a G-10 scales and four finger grooves for superior grip. The blade on the Fire Spark is a modified spear point design with a razor sharp edge, high hollow grind and swedged top edge. The Fire Spark includes a 3-way reversible pocket clip for ambidextrous use.

Finally to maintain lockup in high-stress situations CRKT added the LAWKS® safety, which effectively converts the folder into a virtual fixed blade when the LAWKS lever is pressed forward.

Ignitor T

CRKT Ignitor T @ BladeHQ.comThe CRKT Ignitor is a value-priced spring assist folder that features the Outburst assisted opening mechanism and Fire Safe. The Ignitor T 6860 features a dark gray titanium nitride coated 8Cr14MoV stainless steel blade with high hollow grinds and Veff serrations (You can get a plain blade instead). The handle is comprised of textured black G10 scales over a strong InterFrame with stainless steel liners. The pocket clip is set for right hand tip-up carry.

CRKT offer sleek style, affordability and quality for the price. A great buy for those looking to spend under $100.

The video below shows you how to open your CRKT knife with their Fire Safe mechanism.

Who needs an Assisted Knife?


Spring assisted knives are commonly overlooked! Do you live in an area where automatic knives are illegal? A spring assist is a very good substitute. Are you looking for a knife with a bit more speed and snap to it than a manual folder? Get a spring assisted knife. Now you might find yourself asking, “Why get a glorified folding knife?” Spring assists aren’t a typical manual folder. They have the speed that draws most people to an automatic knife. My favorite thing about a spring assisted knife is that if the spring ever fails or breaks, you still have a thumb stud or a flipper to use it as a manual folder. Spring assisted knives have proven themselves to be very reliable in the ever-changing world of knives.

Some other great features of having a spring assisted knife is that it can be operated with only one hand. Owning one means that you can easily use it when participating in activities that require the constant attention of one of your hands. For those who suffer from arthritis or weak fingers, a spring assisted knife is far easier to open than an automatic knife with a stiff button. 


Today we are going to look at some top of the line spring assisted knives. We will be starting with some great budget assisted knives and work our way up in price.


The Kershaw Oso Sweet 1830:

 Kershaw Oso Sweet Spring Assisted Knife 1830 Open      Kershaw Oso Sweet Spring Assisted Knife 1830 Closed


This was my first spring assisted knife. I couldn’t have been more happy with the quality of this knife. Not only did it feel amazing in my hand, but the speed of the knife was amazing. It features SpeedSafe technology for smooth and quick opening. Kershaw uses this on many of their best-selling knives. The pocket clip can be switched for tip up or tip down carrying. The flipper is really easy and fun to use. You won’t even notice the knife while it is in your pocket. I didn’t understand the name until I held the knife; and it is literally oh so sweet. This knife is a sportsman’s knife. It is great for activities like fishing, hunting and great to take on a hike with you. If this knife doesn’t satisfy you, I don’t know what will.


The Smith & Wesson Black Ops:

Smith & Wesson Black Ops SWBLOP4BS Spring Assisted Knife (3.35" Black Serr)      Smith & Wesson Black Ops SWBLOP4BS Spring Assisted Knife (3.35" Black Serr)


This is the series 4 of the Black Ops and is a part of Smith & Wesson’s M.A.G.I.C. assisted opening knives line. The action on this knife is quick and solid. For a liner lock knife, this knife locks up secure. The pocket clip can be reversed to be a left or right handed carry. There is very comfortable jimping all over this knife. It comes with a safety and a strategically placed lanyard hole. This knife is guaranteed to put a smile on your face. The Black Ops is a great every day carry (EDC) knife. It fits well in your pocket and quickly proves its usefulness in day-to-day jobs. It is perfect for someone who doesn’t have the use of one of their hands or who has arthritis.


Moving forward, let’s take a look at something with a few more features.

The Benchmade 580 Barrage:

Benchmade Mini Barrage Knife 580 Spring Assist Open      Benchmade Mini Barrage Knife 580 Spring Assist Closed

I haven’t yet had the pleasure of owning this knife, but I have held and “played” with it several times. It is a very strong and durable knife with a very satisfying spring. You can either open the knife with the thumb stud or by pulling the axis lock down and flicking your wrist. If a safety is a must for you, then that makes this knife even more desirable. It comes with a very solid safety on the spine of the knife. Another nice feature of this knife is the reversible pocket clip. The blade is 154CM stainless steel. However there are several different models of the Barrage. The Barrage is perfect for a hard use knife. Not only that, it is really good for self-defense purposes. This knife wants to be put to work and will more than meet your requirements.

Last but not least…

The Zero Tolerance 0301/0301ST Strider Onion Knife:

Zero Tolerance 0301 Strider Onion Knife Ranger Green (3.75" Tiger Stripe) ZT     Zero Tolerance 0301 Strider Onion Knife Ranger Green (3.75" Tiger Stripe) ZT

Now if you want a high quality hard use knife that looks good, look no further! The ZT 0301 is an amazing knife that will never fail on you. It is co-designed by KAI’s Ken Onion and Strider. They did a really good job on making a very durable knife. The blade is DLC coated so it doesn’t scratch too easy. If it does, some Rem Oil or dish soap will buff it right out (unless it’s a deep scratch). The frame lock ensures a solid lock up with no blade play. This knife was designed to be adjusted with minimal tools. It’s lightweight for the size and considering the materials that are put into this knife. This knife is a good choice for just about any job you can think of. It is definitely on my wish list!

If you have any spring assisted knives that you would like to show off or express your feelings about, feel free to comment on the post.


The Thumb Stud Versus The Flipper

There are many different styles of knives in the world. Major or subtle differences can range from size of knife to type of blade to difference in the blade release to color and weight. Today we will be focusing on the blade release aspect of a knife; and more specifically the difference between the thumb stud and flipper. Keep in mind there are many variations of blade releases: The thumb hole, thumb tab/lug, nail nick, push button and dual action (which have a hidden scale/bolster release) to name a few.

The Thumb Stud

The thumb stud makes for an easy and quite common operation used to open up a folding or spring assisted knife. The thumb stud sits on the side of the blade near were the blade pivots on the handle. It makes for a comfortable way to use one hand to open the knife. One thing to consider is how close this puts your hand to the blade itself. A cautionary warning: There are many accounts of people actually cutting themselves while opening blade. Your thumb might slip and get sliced.

Benchmade Mini Barrage Knife 585S Spring Assist Axis Lock (2.91" Satin Serr)

Benchmade Mini Barrage Knife 585S

If you would like see how to open a knife with a thumb stud, watch below.

Courtesy of

The Flipper

Flipper knives offer another way to smoothly open both spring assisted and manual folding knives. The flipper is normally located on the spine of the knife as part of the blade. The blade is deployed by using the index finger to pull back on it. This not only keeps your hands at a safe distance from the blade but gives you an added finger guard once opened. The flipper in most cases will actually swing around and end up underneath the knife continuing to offer protection from accidental knife injuries. If you are concerned the safety of your thumb, a flipper knife will be more to your liking.

Smith & Wesson Black Ops SWBLOP4BS Spring Assisted Knife (3.35" Black Serr)

Smith & Wesson Black Ops SWBLOP4BS

If you would like see how to open a knife with a flipper, watch below.

Courtesy of

Both types deploy the blade with relative ease. When it comes down to getting a knife with a thumb stud or a flipper, it is all about preference and intended use.

The Top 6 Assisted Opening Knives

What are the top 6 assisted opening knives? Of course, everyone will have an opinion on which knives are the best of the best. For me, I tried to consider price, quality, and style while I was choosing which were the best. I have a personal bias toward black bladed knives (I just think they look cool, ok?) so most of the time here I have included the black blade versions of knives even when other options are available for those that prefer them.

#6 Kershaw Clash 1605CKT

This knife will moset definitely not clash with your every day carry use.

Despite its low price, the Kershaw Clash definitely gets the job done. Do not underestimate the quality and durability of this knife. The knife opens with a firm push of the flipper you will not hesitate to tackle any task with Clash. The handle gives a comfortable feel while gripping the handle firmly. There are no hot spots in the handle that will wear down your hands over time. The liner lock strongly secures the blade in place; and when retracting the flipper even guards a stray finger when closing one handed.

#5 Meyerco Maxx-Q G-10 Handle

My favorite knife to pack for the quick campout.

I love the feel and style of this blade. Next to the cost, I would say the next thing that catches my attention is the recurve on the mid-section of the blade. That allows a quicker cut with a little less force than most other knives. The handle compared to the blade may look a little longer than it should, but that with the G-10 construction allows for a solid grip in any position.

#4 SOG Trident Tanto TF-7

This is definitely my go to knife to carry for emergency purposes.

You’ve just been in an accident. You car has rolled and you are hanging in the driver seat, unable to release your seatbelt. No worries because you can just reach for your SOG Trident. Without the need to expose the full blade and risk further injury, just slip that strap into the groove in the handle and slit your way free from harm. With tough steel and a light handle it performs great, and will last far beyond the emergency period.

#3 H&K Nitrous Blitz 14460BT 

With Benchmade manufacturing H&K knives you have the quality assurance and production expected from a high performance knife.

If you are willing to spend a little bit more buck for your bang, this is definitely one of the top knives. For simplicity of what a pocket knife should be, this knife hits the nail on the head. The handle has a great lightweight, and comfortable grip. The Benchmade Nitrous spring mechanism works great. It springs open by flipping at the thumb stubs which is comfortable and easy.

#2 Zero Tolerance 0350 Zdp-189

I cannot imagine a job that this knife would not be able to handle.

Now we’re getting into the big boys. The best part of this knife is the extra work that was put into producing a long lasting blade. The blade is a ZDP-189 steel composite, with textured matte black G-10 scales. I find that this knife is the limit of what I would consider an every day carry in my pocket for size and weight.

#1 Zero Tolerance Knives 0300 Strider Onion

The blade has a great shape to handle any position and a nice ergonomic design.

You know why it’s called an “onion?” Because it’ll make you cry. The fat lady has sung. I love the black on black look and feel of this knife. The frame lock allows for a solid lock up and I would not hesitate to really take this knife to its extremes. The flipper on this blade has the best feel and response, and the blade stop/thumb stud is a great option as well.