Although Dremel 4200 is somewhat an improvement of Dremel 4000, from our comparison table above it is clear that there is not much difference between the two tools.

Both run on 1.6-Amp motors and this means they produce the same amount of power and so their performance is also similar.

Also, both are variable speed tools with speed ranges of between 5,000 and 35,000 RPM and with separate on/off speed control

The point of departure between these handy tools is the accessory change system and their kit options.

Dremel 4000 uses the EZ Twist Nose Cap while the 4200 uses an EZ change system.

When it comes to the kit options, Dremel 4000 provides one more attachment an accessories combination than the 4200. However, most Dremel 4200 kit options have more attachment and accessories than what you find on most kit options on the Dremel 4000 series.

Dremel 4000 vs. Dremel 4200 - Key Differences

Besides the obvious physical differences in dimensions and weight between these two rotary tools, their most significant differences are the accessory change system and kit options. And here is what each has to offer.

#1. Accessory Change System

The accessory change or chuck system is the piece that tightens around and secures the shank on the accessory bits that rotary tools use to perform their tasks.

Chuck systems are available in different types and sizes (for example, 1/16, 1/32 and 1/8 inches) both of which determine the types of accessories that the rotary tool can accept and also how easy they will be to change.

Dremel rotary tools are designed to accept various accessories and attachments. But different models will use different chuck systems to allow for this.

The Dremel 4000 uses Dremel’s EZ Nose Twist Cap to make accessory change fast and easy. This chuck system features an integrated wrench that will allow the nose cap to be used as a wrench for tightening or loosening the collet nut when changing the accessories.

Dremel 4200, on the other hand, uses the EZ Change mechanism. This mechanism has an integrated pull lever system that replaces the standard collet nut on other Dremel rotary tools to allow accessory changes without having to use a wrench

While both accessory change systems make accessories fast and easy to change, the EZ change system on Dremel 4200 is a much better option simply because you will not need a wrench.

#2. Kit Options

Dremel 4000 Kit Options

#1.  Dremel 4000-2/30 Rotary Tool Kit

The Dremel 4000-2/30 is the most basic rotary kit on the Dremel 4000 series as it contains only 2 attachments and 30 accessories which are both fewer than what you get on the other three kits.

For the attachments, you will get the circle cutter/straight edge and sanding/grinding guides. And the 30 accessories are:

Despite not having as many accessories as the other three Dremel 4000 kits, this kit still has enough to make it useful for carving, engraving, cutting, grinding, sharpening, cleaning, polishing and sanding. And it also comes with both carry and accessory cases.

#2. Dremel 4000-3/34 Rotary Tool Kit

Dremel 4000-3/34 has 1 attachment and 4 accessories more than what you get on the 4000-2/30 and hence making it a little more versatile.

The attachments that you get on this kit are a multipurpose cutting guide, sanding/grinding guide, and the detailer's grip.

And the 34 accessories include:

• 1 engraving cutter and 1 high-speed cutter for carving and engraving
• 4 cut-off wheels and 1 multipurpose cutting bit for cutting
• 2 silicon carbide grinding stones and 2 aluminum oxide grinding stones for grinding and sharpening
• 1 nylon bristle brush, 1 carbon steel brush, 5 felt polishing wheels and 1 polishing compound for cleaning and polishing
• 1 sanding drum, 5 sanding bands and 4 sanding discs for sanding
• 3 miscellaneous mandrels, 1 3/32-inch collet, and 1 wrench

Dremel 4000-3/34 can do everything that the 2/30 kit can do but it has more polishing accessories and fewer sanding accessories than the latter. And so it will be a much better option for those looking for a rotary tool kit specifically for cleaning and polishing.

#3. Dremel 4000-4/34 Rotary Tool Kit

The Dremel 4000-4/34 has the same number of accessories as the 3/34 above bit with one more attachment.

When you buy this kit, the attachments that you will get are the multipurpose cutting guide, a sanding/grinding guide, circle/straight edge guide and detailer's grip.

And the accessories are:

• 1 engraving cutter and high-speed cutter for carving and engraving
• 4 cut-off wheels and 1 multipurpose cutting bit for cutting
• 2 aluminum oxide grinding stones and 2 silicon carbide grinding stones for grinding and sharpening
• 1 nylon bristle brush, 1 carbon steel brush, 5 felt polishing wheels and 1 polishing compound for cleaning and polishing
• 1 sanding drum, 7 sanding bands, and 4 sanding discs for sanding
• 3 miscellaneous mandrel and 1 wrench

This kit can do everything the two above can do as it has almost all accessories you get on both and with an extra attachment to make it a little more versatile.

#4. Dremel 4000-6/50 Rotary Tool Kit

Dremel 4000-6/50 is the most comprehensive rotary tool kit in the 4000 series, and it has more attachments and accessories than all the other three options. And what this means that it can do everything they can do and much more.

Its 6 attachments are a flex shaft attachment, multipurpose cutting guide, sanding/grinding attachment, cutter/straight edge guide, lawn mower and garden tools sharpening attachment and a shield attachment.

For the accessories, you get the following.

• 1 engraving cutter and 2 high-speed cutters for carving and engraving
• 11 cut-off wheels and 1 multipurpose cutting bit for cutting
• 4 aluminum oxide grinding stones and 1 silicon carbide grinding stones for sharpening and grinding
• 1 nylon bristle brush, 2 carbon steel brushes, 4 felt polishing wheels, 1 cloth polishing wheel and 1 polishing compound for cleaning and polishing
• 3 finishing abrasive buffs, 1 sanding drum, 6 sanding bands, and 6 sanding discs for sanding
• 1 1/8-inch drill bit, 3 miscellaneous mandrels, 3/32-inch collet and 1 wrench

With more attachments and accessories than any other Dremel 4000 kit, this is a great choice for those that use rotary tools a lot and for different purposes.

Dremel 4200 Kit Options

#1.  Dremel 4200-4/36 Rotary Tool Kit

Dremel 4200-4/36 is the most affordable of the three model 4200 kits and it would be a great buy for someone looking for something with just the basic accessories and is shopping on a budget.

It has 4 attachments and 36 accessories which is still quite high as it is more than what you get on all Dremel 4000 kit options except one.

The 4 attachments are a lawn mower and garden tool sharpener, sanding/grinding guide, multipurpose cutting kit and shield rotary attachment.

And the accessories include:

#2. Dremel 4200-6/40 Rotary Tool Kit

With a couple of extra attachments and 4 more accessories, the Dremel 4200-6/40 is more versatile than the 4/36 but still not as versatile as Dremel 4200-8/64.

But, this 47-piece rotary tool has more than enough attachments and accessories for most DIYers and craftsmen.

Its attachments are the lawn mower and garden tool sharpener, circle cutter and straight edge guide, multipurpose cutting kit, shield rotary attachment, sanding/grinding guide and detailer’s grip attachment.

For accessories, you get the following.

• 1 engraving HS cutter and 1 high-speed cutter for carving and engraving
• 1 thin cut wheel, 1 cut-off wheel and 1 spiral bit for cutting
• 2 aluminum oxide grinding stones and 1 silicon carbide grinding stone for grinding and sharpening
• 1  brush wheel and 1 carbon brush wheel for cleaning and polishing
• 1 drum mandrel, 18 sanding bands and 9 sanding discs for sanding
• 1 miscellaneous mandrel and 1/8-inch drill bit for miscellaneous use

#3. Dremel 4200-8/64 Rotary Tool Kit

Dremel 4200-8-64 comes with 8 attachments and 64 accessories which is more than what you get not only on most Dremel rotary tool kits but also on those from most other top brands.

And so whether you need something for polishing and cleaning as you finish your projects or for cutting and grinding this will be a great buy.

The 8 attachments are a flex shaft attachment, shield attachment, detailer’s grip attachment, circle cutter/ straight edge guide attachment, right angle attachment, sanding/grinding guide attachment, garden tool sharpener attachment and a cutting guide attachment.

And the accessories include:

• 1 engraving HS cutter, 1 high-speed cutter and 1 diamond wheel point for engraving and carving
• 1 thin cut wheel, 1 metal cut-off wheel, 1 metal grinding wheel, 1 carbide cutting/shaping wheel, 1 drywall cutting bit and 1 multipurpose cutting bit  for cutting
• 3 chainsaw sharpening stones, 2 aluminum oxide grinding stones and 1 silicon carbide grinding stone for grinding and sharpening
• 3 polishing cloth, 1 brush wheel, 1 carbon brush wheel and 1 polishing compound for cleaning and polishing
• 30 sanding bands and 9 sanding discs for sanding
• 2 miscellaneous mandrels, 1/8-in drill bit and collet fan

There are plenty of accessories and attachment on this kit to help with various home improvement, DIY, and crafts.

And it will also come with a deluxe storage case for easy organization and storage of the tool and all accessories/attachments.