This section is to allow you to find the quickest answer to the most popular questions our customer service team receives. If you still can’t find an answer to your question, please contact us!

Shipping Questions

 All parts listed on our website are in stock. We usually ship the same or next business day.

Absolutely. Each item ships in the smallest possible to container, insured, expedited & tracked. We can however combine several items into the next box size to save some costs; savings are automatically refunded back to you. Please understand though that most parts are heavy & it makes no sense to cram too much stuff into a certain sized package, the parts will arrive damaged. If you’re purchasing one of the larger items, for instance a grinder chassis, as well as some of the smaller items, we can ship some of the smaller items in the same box as the chassis: the weight goes up so Fedex charges more but it does work out slightly cheaper than shipping parts individually. If you have your eye on multiple products & need an accurate shipping quote, shoot us an email & we’ll work it out for you.

We use three main carriers, FedEx, UPS, and USPS.

FedEx and UPS are used for larger items and USPS are used for smaller items. Our main focus is YOU our customer. We will always ship your order the cheapest, fastest possible way. We have the right to switch between carriers to whatever makes sense after your order has been packed. The carrier used will be based on the package final weight, size, and shipping destination address. 

All high-value orders will be required to sign for upon delivery due to the dollar value. If you don't want to 

FedEx will obtain a signature from someone at the delivery address or from somebody nearby, such as a neighbor or building manager. The recipient has the option to authorize the shipment to be released without anyone present. This change can be requested through FedEx Delivery Manager.

An electronic signature is available for recipients to sign for their package in advance. Signatures can be signed electronically through FedEx Delivery Manager or the FedEx® Mobile app.


  1.  You will receive an order confirmation via email a few minutes after you place your order, if not please check your Junk and Spam folders
  2. We will send you your tracking number as soon as your order shipped (within one or two business days)
  3. Please check your spam or junk folder for emails from
  4. If you checked out as a guest you will not be able to login into your "My Account" page to "Track My Order" order
  5. If you create an account after you placed an order we can link your orders to your account
  6. To do so create an account and then send us an email to link your orders to your account. 

If you create an account during checkout you would be apple to log into your account and track your order and see all your previous orders. 

If you checkout as a guest you will not be able to login into your account to track and view all your orders. Instead, we will email you all your tracking information. Please make sure you whitelist any emails coming from If you don't get any email make sure to check your junk or spam folders

This is normal: UPS tracking numbers will only work after the package has been scanned by a UPS employee.
#1 - This is if his handheld scanner can connect to the online UPS database, if not you will only be able to track your order after the scanner has been synched at the UPS warehouse. 
#2 - Keep in mind if you receive a UPS tracking number after the pickup cut-off time (UPS picks up from our warehouse once a day) you won’t be able to track your order until it has been picked up and scanned by the UPS driver the following business day.
#3 - This is different compared to FedEx and USPS orders that can be tracked within a few hours even if the driver hasn't picked them up yet.

International Shipping Questions

Yes, we ship to all major countries.  Shipping International is a tricky business but we have an experienced logistics team that knows how to avoid all the common pitfalls dealing with taxes and duties shipping internationally 

The shipping cost varies based on what you order and where you are located. The shipping cost will include the following:

  1. Shipping Charges 
  2. Insurance
  3. Import Taxes
  4. Import Duties

Shipping international is a two-step process.

Option 1 - Invoice Me (Best Option)

  1. You place an order like normal, during checkout you can choose the option "Invoice Me"
  2. We will then send you a quote for Shipping, Taxes, and Import Duties
  3. We will then update the invoice and send you a link to pay the invoice

Option 2 - Partially Paid

  1. You place an order like normal, during checkout you can pay for the products (excluding shipping) via Debit Cart, Credit Card, or PayPal
  2. We will then send you a quote for Shipping, Taxes, and Import Duties
  3. We will then capture the funds for the additional charges, if unsuccessful we will send a link to pay for the shipping and import fees, this will be a separate order 
  4. When all is set and done you would have paid two separate invoices, one for the products and one for the shipping 

Yes, we can ship products that you purchased on your FedEx account number. To do so use Local Pickup during checkout and contact us via the contact us form to arrange shipment

Just add everything to your shopping cart and check out like normal. Instead of paying for the order just select 'INVOICE ME" Then we will get you a quote for shipping. 

Will Call (Pickup in Person) Questions

We do not have a store but we do offer Will Call on paid orders. If you’re local and would like to pick up your order in person to save on shipping cost. 

We typically need one to two full workday to get your order ready. In some cases, an order might take longer to build.  Once your order is ready we will send you an email to pick up your order, don't drive out until you get the confirmation email. Will call pickup hours are between 11 am and 3 pm. 

Example 1: If you place your order late on Friday afternoon we will get it ready on Monday and Tuesday, you can pick up in person on Wednesday between 11 am and 3 pm.

Example 2: If you place your order early on Wednesday morning (Before our workday starts) we will get it ready on Wednesday and Thursday, you can pick up in person on Friday between 11 am and 3 pm.

Unfortunately, all orders need to be prepaid

We have two locations:
Beaverton Oregon 97078
Hillsboro Oregon 97123
Depending on what you order we will send you the pickup address on the day of the pickup.

Note: Orders over $350 will require a photo ID to be picked up.

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Motor and VFD Questions

  1. Any motor from about 3/4hp & up works fine. 1700rpm motors work, they just do things a bit slower than 3450rpm motors (including making mistakes!). Either speed motor will do stock removal at full speed just fine; to turn small wheels or sharpen knives the belt speed will have to be slowed down & there are various means available to do this. A VFD is the ultimate to have, it obviously allows the widest range of speeds
  2. Alternatively, a pulley system also works to vary the speed
  3. See our Belt Speed Calculator (Link opens in a new page)for more information


Here it is very important to be warned about folk selling open VFDs for use on their “knife grinders”. These are VFDs that are not designed to be used as standalone units, they’re designed to be incorporated in electrical enclosures on larger machinery. You can easily spot them by the vents on the sides & they normally have open electrical contact points on the bottom or back. They show up on eBay listings with grinders (especially from places like Poland & China). Folks, these things ingest not only grit from grinding but also water when blades are quenched & they are therefore an extreme hazard in a knife making environment.

Our VFD's are totally enclosed in NEMA rated enclosures.

The short answer is NO.
If you buy a grinder with an electric motor and no VFD we will ship you a single-phase 110-volt motor that can not be upgraded to a VFD later on.
Let Me Explain
#1 - A single-phase 110-volt electric motor can not be connected to a VFD because it has a starting circuit and a running circuit. The starting circuit utilizes a large capacitor and a mechanical centrifugal switch. The starting circuit is used to get the motor started, once it reaches a certain speed the centrifugal switch will open (disconnecting the starting circuit) and the motor will run on the running circuit, the mechanical centrifugal switch does not work well with a VFD which.  
#2 - A single-phase motor is wound differently than a 3 phase motor and in some cases, the motor needs to be rewound to make it work
#3 - It is difficult to control the low-speed on a single motor with a VFD
#4 - We haven't been able to find a reputable VFD supplier for a single-phase motor
It is not advisable to operate a single-phase motor with a variable frequency drive. While it is technically possible, the disadvantages far outweigh any benefits that you might expect. In a majority of cases, it is less expensive to upgrade to a 3 phase motor for use with a VFD. 

Electric Motor Packages
#1 - Motor 1.5 HP (No VFD)  
#2 - Motor 1.0 HP, With VFD  
#3 - Motor 2.0 HP, With VFD  

All motors that are VFD compatible are 3 phase motors. The VFD is what makes it works with regular household electricity. It can be wired for 110V or 220V

All our motor packaged (with or without a VFD) can be plugged into a regular 15 AMP household 110-volt (Non-GFCI) outlet. The current draw is under 15 amps

Bigger is Better. With a VFD you can control the speed of the motor because the VFD makes it variable, the range is from zero to the max speed of the motor. To get a higher speed out of your setup it is always better to use the biggest drive wheel you can get as you can control the speed in between.

NOTE: Some motors might require a Motor Spacer Kit if used with larger than 6" Drive Wheel

When you purchase any of our Electric Motor packages you can choose for it to be wired for 110V to 220V. With that being said, 90% of our customers will use a 110V setup as they don't have access to a 220V setup.

#1 - If you choose a 110-volt setup your VFD unit will be wired for 110 volts (which will supply 220 volts to the electric motor). The setup (VFD and Motor) will come prewired with a 110V plug that can be plugged into a regular 15 AMP household 110-volt (Non-GFCI) outlet. 

#2 - If you choose a 220-volt setup your VFD unit will be wired for 220 volts which will supply 220 volts to the electric motor. The setup (VFD and Motor) will come prewired 220 volts but the end will not have a plug, you need to supply fit your own plug as there are too many different 220-volt style connectors currently on the market. 

#3 - The 1.5 motor package without VFD can only be wired for 110 volts, 220 volts is not an option.  

Motor Packages

#1 - Motor 1.5 HP, No VFD (Only 110-Volt)
#2 - Motor 1.0 HP, With VFD  (Choose between 110V or 220V)
#3 - Motor 2.0 HP, With VFD (Choose between 110V or 220V)

Additional Questions

Question Can I change my VFD from a 110-volt setup to a 220-volt setup and vise versa?
Answer Yes, you can but it is something that MUST be done by a licensed electrician because if it is wired incorrectly it will damage the VFD

Question How do I know if my VFD is wired for 110-volts or 220-volts
Answer Look at the plug if it has a plug that plugs into a regular 15 AM household plug it is wired for 110 Volts, if it does not have a plug it is wired for 220 volts and you need to supply your own plug

All our Electric Motor Packages have a 5/8 drive shaft. 

When using our small wheels at full speed the bearing will overheat and fail because they will exceed the maximum allowable rotational speed. Besides speed, the load on the bearing must be factored in as well, as more load on the bearings will generate more heat. The ultimate solution is to use VFD, which will allow you to vary the motor speed between 0 and max RPM. 

As a general rule, you can run the small wheels with no load for a few minutes, if they get too hot to touch they will fail if you don’t lower the belt speed. The ideal belt speed is around 14 MPH (1884 SFM). Keep in mind the smaller the wheel the slower the speed.

Use our Belt Speed Calculator to calculate the belt speed on your setup. 

All our electric motors come with Foot Plate and 56C Face. So it can be mounted either way. Depending on your Belt Grinder here are the best options. 

Diktator - Foot Plate Mount
Mini Diktator - 56C Flange Mount 
Das Toobinator - Foot Plate Mount
Bandit DiY - 56C Flange Mount

We have an optional Base Plate that comes with Pre-drilled holes for perfect alignment of grinder and motor. 

Grinder Related Questions

What do I look for in a knife making belt grinder?
A. Versatility, Durability. Reliability. The absolute worst so-called knife grinders on the market are the ones made with pieces of grooved extruded aluminum. Why do folk use that then? Because it’s cheap, in most cases even free because they cut up salvaged server racks. Grinding grit builds up in the grooves & in no time your machine is worn loose. Some of these machines are painted black to hide the extrusions, be careful. Then there’s just a whole bunch of rip off artists selling absolute junk: feel free to contact us & we will point out the absurd flaws in their designs.

Our machines have evolved into highly reliable, highly versatile, dependable workhorses with an unparalleled range of high-quality accessories. Buy with confidence!


A.  Our wide range of manufacturing capabilities allows us complete freedom to select the correct design criteria. So if a part needs to made of steel & welded, we do that. If a part can be formed, making it stronger & cheaper than a milled part, then we form it. If a part needs to be steel instead of aluminum, we use steel & powder coat it to make it corrosion resistant. We laser most sheet metal, but if we can shear it we do that. If a part can be waterjetted instead of routed out, we do that. It is best to illustrate the value of this by analyzing some of our competitors’ products. First of all there are the guys working out of their garages. They can saw, drill & tap… so basically their whole machine is made just with those capabilities & it clearly shows, the machines look as if they were designed with just a ruler. Then there’s the next level, we call them the “mini-mill” guys. They have a little cnc milling machine, so their whole grinder is come hell or high water going to be made on that mill… & they mainly use aluminum because it machines easily. Then there’s the folk who design a rickety bolt together machine just so that it can be broken down into a small box, thereby luring customers with cheap shipping (the local guys selling a pile of plates in a box & just about all of the overseas guys). Now let’s compare this to the automotive industry. Imagine your car or truck was made exclusively on a milling machine, using billet aluminum. Can you imagine the cost! Can you imagine the wear! Think of the gears inside the transmission being made of aluminum instead of steel, just because aluminum machines easily? Or imagine the vehicle being made just so that it can be folded up & put in a USPS large Flat Rate box? Consider this when you shop for a belt grinder or grinder parts. Are you willing to overpay for parts that are badly manufactured in the most expensive way? How soon will aluminum parts wear out in a grit filled knife making environment? Is it worth pinching pennies on shipping costs for a machine that’s going to be bolted to your bench for a long long time?

And then there’s obviously the volume factor. OBM sells more hobby knife making equipment in more countries than our five closest competitors combined! That means we do absolutely everything in bulk & there’s no better way to make parts effectively than churning out huge numbers.

Our machines have evolved into highly reliable, highly versatile, dependable workhorses with an unparalleled range of high-quality accessories. Buy with confidence!

General Questions

We accept all major credit cards: Visa, MasterCard, Discover, and American Express.

All parts listed on our store are in stock.


A. It’s all about money from advertising. Youtube has recently started allowing channel owners to remove comments as well as replies to comments which they don’t like, believe it or not. Couple that with folk who make “review” videos for a living (yes, these are not just guys in their garage, making unboxing vid’s for fun, they are highly monetized on Youtube & make small fortunes) & you end up with heavily skewed product reviews. Next time you look at a review of a grinder of which you can clearly see the flaws (no paint, flimsy design, high price for what you get etc.) & every single comment is positive, be very weary, you’re being misled.

“You can fool all the people some of the time and some of the people all the timebut you cannot fool all the people all the time”. Abraham Lincoln

The Toobinator comes almost fully assembled. Depending on what you purchased the grinder might ship in more than one box, check your tracking number, each box will have its own tracking number. We do this to save on shipping costs mainly to stay below the weight and dimension limits that are set by the different carriers. Yes, technically we can ship it all in one box but this will trigger the overweight and over-size limits (set by the shipping carrier) which will double the shipping costs.
Our main focus is you, the customer, we figured that if you are a knifemaker you should be able to bolt a few things together. The main components would be

#1 - The Grinder
#2 - The Motor, with or without VFD (if ordered)
#3 - The Base Plate (if ordered)

Watch the unboxing video below (the video will open in a new tab).

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