Short answer: install the driver for your MUNBYN model, set the paper size to 4x6 inch (100*150mm in MUNBYN's wording), export your orders from TCGplayer, pick 4×6 Thermal in TCG Speed Shipper, run the free test print and print at 100% with no margins. If labels skip or shift, calibrate the printer with the FEED button the way MUNBYN shows for your model.
MUNBYN makes several 4x6 label printers, and its support pages are written per model (RW411B, RW405B, ITPP941 and others). The menus below are the ones MUNBYN shows; your model's names may differ a little. The printer steps come from MUNBYN's support site (linked at the bottom). The TCG Speed Shipper steps are what the app does today.
Step 1: Install the MUNBYN driver and load labels
Get the driver for your exact model from MUNBYN's support site; the downloads are listed per model.
Windows. MUNBYN says to make sure the printer is connected and turned on, then double-click the installer and follow the steps. To check it, open Control Panel, Devices and Printers, right-click the label printer, choose Printer Properties and click Print Test Page.
Mac. With the printer connected and on, double-click the "dmg" installer. If macOS says the driver is from an unidentified developer, MUNBYN says to allow it in Security & Privacy and run it again.
Load the labels. MUNBYN says to load at least 4 labels in a row. On its newer printers, "Once the cover is closed, the machine will automatically attempt to feed the paper." If it doesn't, calibrate (see troubleshooting).
Step 2: Set the paper size to 4x6
Windows: MUNBYN's path is Settings, Bluetooth & devices, Printers & scanners, your MUNBYN printer, Printer preferences, Page Setup, then the paper size. Pick "4x6 inch or 100*150mm". On some drivers the list is called Paper Name, and you click New to add a size that isn't there.
Mac: choose File, Print, then Show Details, and set Paper Size to 4.00 x 6.00". If it isn't listed, click Manage Custom Sizes, enter the width and height, and click OK. MUNBYN suggests saving it as a preset so you don't set it every time. Under Printer Features you can also set Media Tracking (Continuous, Gap or Black Line) to match your labels, and the Darkness.
Step 3: Export your orders from TCGplayer
In the TCGplayer Seller Portal, open Orders, tick the orders you are shipping (the top checkbox selects the whole page), then click Export Shipping. You get a CSV with each buyer's name and address. The Packing Slip button makes a PDF instead. You only need that PDF if you want TCGplayer's slips with the card lists (step 4).
Step 4: Choose 4x6 in TCG Speed Shipper
- Drop the Export Shipping file on the TCG Speed Shipper home page. It is read in your browser.
- Under Format, pick 4×6 Thermal.
- Open Printer setup and a free test print and pick MUNBYN under Your printer. You get the short print settings for it, and the format switches to 4×6 if it wasn't already.
- Want packing slips? Click + Add TCGplayer packing slips (PDF) and add the Packing Slip PDF. Keep Packing slips on. Each order prints as its label, then its TCGplayer slip on the next 4x6 label, one slip per label. More in how to print TCGplayer packing slips on a thermal printer.
Step 5: Make a free test print
Click Test print (free) in the same printer box. It downloads one sample label in the format you chose, with no buyer data, and it doesn't use any of your labels. Print it on the MUNBYN with the settings from step 2. The text should fill the label with nothing cut off. If it doesn't, see the troubleshooting section below before you print the real batch. MUNBYN has its own sample 4x6 label too (munbyn.biz/label). Its check opens the sample in Chrome with Scale set to "Fit to printable area". For our PDF, which is already exactly 4x6, use 100% instead.
Step 6: Print at 100%
Click Download PDF, open it, and print to the MUNBYN. In the print window:
- Paper size: 4 x 6 in (100 x 150 mm).
- Scale: 100% (also called Actual size). Turn off "fit to page".
- Margins: None, where the dialog offers it.
The PDF is already exactly 4x6, so any scaling only makes it smaller or cuts it off. These are the same settings as the in-app tip: "print on a thermal printer at 100% scale, margins none." Then peel, stick and ship.
Troubleshooting
The label prints small
MUNBYN says the main reason a label prints wrong is that the "file size is not 4x6 inches". Our PDF is 4x6, so check the other two sizes MUNBYN lists: the label paper you loaded and "The size option you selected on the print preview page". All three have to match. Then make sure the scale is 100% and not "fit to page".
The label is shifted or part of it is missing
MUNBYN's fix is to calibrate so the printer learns the label. The button steps differ by model, so use the one for yours:
- Newer models: load at least 4 labels, close the cover, and if it doesn't feed by itself, "press and hold the Feed button until you hear a 'beep'".
- RW411B: load at least 4 labels, and after the paper stops, press the FEED button twice in a row. You'll hear two beeps.
- If the light stays solid red or the printer won't detect paper (MUNBYN's page is for the 403B): power off with no paper loaded, hold FEED while you power on, let go at the beep, let it run, wait 5 seconds, then restart and load paper.
Blank labels between labels
MUNBYN calls this skipping. Its two causes: the three sizes above don't match, or the labels. MUNBYN says "Other brands' labels may not be compatible with our printer, causing it to skip." Match the sizes, calibrate, and if it still skips, try a different roll.
Faint text
The return address prints in solid black. If it's still light, tick Print the return address in bold under Return address; it's saved for next time. For the whole label, MUNBYN says to print from a PDF (not a picture), "increase the density and reduce the speed", and wipe the print head with alcohol wipes. Darkness and speed are in Printer Preferences, Option on Windows, and Printer Features on a Mac.
FAQ
What paper size do I pick for a MUNBYN?
4x6 inch, or 100*150mm, in Printer preferences, Page Setup on Windows. On a Mac, pick 4.00 x 6.00 under Paper Size in the print window, or add it with Manage Custom Sizes.
How do I calibrate a MUNBYN printer?
It depends on the model. MUNBYN's newer pages say to load at least 4 labels and press and hold the Feed button until it beeps. Its RW411B page says to press FEED twice in a row and wait for two beeps. Check MUNBYN's support page for your model.
Why does my MUNBYN print blank labels between labels?
MUNBYN says to make the file size, the label size and the paper size in the print window all match, then calibrate. It also says other brands' labels may not be compatible and can cause skipping.
Can I print TCGplayer packing slips on a MUNBYN?
Yes. In TCG Speed Shipper, add TCGplayer's Packing Slip PDF with + Add TCGplayer packing slips, pick 4x6 and keep packing slips on. Each order prints as its label, then its slip on the next 4x6 label.
My MUNBYN labels print too light. What do I do?
Tick Print the return address in bold under Return address in TCG Speed Shipper. For the whole label, MUNBYN says to raise the density (Darkness), lower the speed and clean the print head with alcohol wipes.
Sources
- MUNBYN Support: Driver Installation on Win (checked November 1, 2026)
- MUNBYN Support: Driver Installation on Mac (checked November 1, 2026)
- MUNBYN Support: Preparation before using on Mac (checked November 1, 2026)
- MUNBYN Support: Why doesn't my label print correctly? (checked November 1, 2026)
- MUNBYN Support: Why does the printer skip paper? (checked November 1, 2026)
- MUNBYN Support: How to check the printer after driver successful installed? (checked November 1, 2026)
- MUNBYN Support: How to Fix Red Light & Paper Recognition Failure via Printer Sensor Calibration? (checked November 1, 2026)
- MUNBYN Support: Why is the printed label not clear? (checked November 1, 2026)