As far as I know the breadboard size is standard. What you could do is use 2 breadboard side by side. 

Been there done that, bulky and could cause more issues. Only way to use 2 boards safely would be to glue them together ,some have places where it appears that they could connect but not all and they still need to be stabilized in some manner. Thanks 

I really like this idea. basically print out a wider breadboard with your 3D printer (You do have one, right?) and reuse the strips from your current breadboard.

Considered purchasing one , just wasn’t sure of what to buy. Seen what people use to build the boxes for weather stations( sure you seen them) . If I did , I would sell the larger bread boards😂

Liked the idea of 3d printing breadboard, but thought I would print just the spacer to connect two boards together.

Creality  ender-3 V2 from Banggood $259 220mm x 220mm x 250mm Approximately 8.8” x 8.8” x 9.9” . So not knowing anything about this stuff makes it difficult to make an informed decision. Will probably start by looking into YouTube for videos and information as what you need to use it . I have read that there are issues with different materials with different nozzle, heated beds vs glass and what ever.

Ronald , you probably could, I don’t have a clue about this subject. Just what I needed to get involved with another hobby 😂 like I don’t even understand what I am doing currently.😂I think the first thing you would run into is the internal connection that bridge the rails. But I can see if you just eliminate the power rails and the bond the boards together you would basically get what you wanted. I actually purchased a double board and will straddle the center power rails giving me the added space I need . Will let you know how it works 😂

The breadboards I ordered from Amazon had removable power rails.  All the breadboard and power rail parts connected together and stuck to a board with double sided tape.  I just removed one power rail from each breadboard and saddled the ESP32 across the sides with no rails.  Also keep one board next to them with power rails on each side so I could mount a breadboard power supply across those power rails.   *** Note some breadboards DO NOT have removeable power rails ***
Amazon.com: 3pcs MB-102 Breadboard, MELIFE 830 Point Solderless Prototype PCB Board Kit for Arduino Proto Shield Distribution Connecting Blocks : Electronics
Will try to get the space blocks I drew and printed this morning on Thingiverse web site in the next few days.

Ronald , so let me understand, the power rails are removable on the boards you sent me a link to? Looks like description was in Spanish so I couldn’t read it . If that’s the case then I am fine with that. So I can remove the rail and then put it together ? Can you please confirm that is what it is. 

YES, the power rails are just clipped to the sides of the bread boards with three little tabs, so if they get in the way, just remove them.  Maybe the Thingiverse article I just published will show it a little clearer.  I left the un-used power rails sitting on the side of my project board so you can see them.
See web site:  Breadboard Spacers – for Bridging ESP32 by RCC1 – Thingiverse
Also, worth noting is:
If you have attached your breadboard to something, it can sometimes be difficult to remove the double-sided tape. In my case I got a little ahead of myself removing one breadboard section and the metal clips inside the board pulled out of the breadboard and stayed with the tape. Ended up removing each clip and reinserting into the backside of the breadboard. It was doable, but not what I would call fun (see last picture in Thingiverse article).

Ronald ; Been there done that with the double sided tape on a board I had. Thanks for the information, I will just order the board from the site you posted. I’ll also look at your thingiverse link.So you still need a spacer of some sort to join the boards ? Thanks again 

No, it is not absolutely necessary to install a spacer block.  It is just another way to create the proper spacing between breadboards.  You can just install an ESP board between the two breadboards to create the necessary proper spacing before using the double side tape to hold the breadboards down.  

Thanks, revisited the Amazon page, it somehow default to Spanish , reset that so I could read it. Funny though, no where does it state that the power rails could be detached. How did you find that out. Thanks again

Just realized, after looking at my current prototype bread board I realize that the power rails are detachable .The Elegoo brand I have allows you to remove the power rails and if you want you could actually snap them back on ,so if you were to purchase 2 of these boards you could expand the width of the board and have more points to make connections. Thanks to reading your post I now know that it is possible .

Steve Mercer, Ronald Chinn , just came up with a solution that worked for me and is quite simple. I made an instructable   that you can view if you want. Basically I took something I learned from Ronald and the Idea from you to create a larger board and this is what I came up with, thanks guys for the inspiration.
https://www.instructables.com/Larger-Prototype-Breadboard-for-Full-Size-Arduino-/
 

Just finished reading your Instructable.  Nice article.  I like the idea of repurposing something to create a new or better function.   After a while you will most likey see Amazon selling breadboard kits using your idea as a selling point. “This breadboard kit can also be configured to support the ESP32 and ESP8266 development boards.”

Thanks, exactly what I was working towards, but I got my idea to do this from corresponding with you about this board. 

Thanks, exactly what I was working towards, but I got my idea to do this from corresponding with you about this board. Steve also have me the idea of creating one , considered creating one with a 3D printer. I just think this approach was easier and faster not to mention less expensive.

Steve Mercer, this is what I did to resolve my question. Read about it below, thanks for your help

https://www.instructables.com/Larger-Prototype-Breadboard-for-Full-Size-Arduino-/

Nicely done

Thanks