Would I be able to replace the blade on my scroll saw? How would I go about doing this?

It sounds like a design issue. Contact their Support line and ask if there are any recalls or improvements for blade alignment.

https://www.dewalt.com/product/dw788/20-variable-speed-scroll-saw

Yes, looks like a few issues!

https://www.google.com/search?q=Dewalt+DW788+scroll+saw+blade+clamp+issues

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Which Scroll Saw are you using...there are multiple brands and multiple models. Help us out and tell us which one you have.

Most of the time there is a clamping mechanism that holds the top of the blade in place. Many models have a door or some access point to the lower end of the blade, too, which you'll have to get to as well.

You'll also usually find that there is some type of blade tension device that needs to be released and then reset before you can install and use a new blade. Make sure the new blade is the same length as the old one, also, make sure that it's the same type of blade, some have a small pin top and bottom, some do not.

Finally, check out YouTube and see if anyone has put up a video for your brand of Scroll Saw. May be the answer.

Good luck and be safe.

This should offer blades of various lengths:

https://www.lowes.com/pl/Dremel--Saw-blades-Power-tool-accessories-Tools/4294607793?refinement=4294965332

https://www.amazon.com/dremel-scroll-saw-parts/s?k=dremel+scroll+saw+parts

Its a 16" blade. here is a link for the right parts.

http://www.ereplacementparts.com/hitachi-cw40-variable-speed-scroll-saw-parts-c-7927_13387_13388.html

Part is $84.00 Are the operators crowding the tool, blades sharp? Scroll saws do not cut quickly.
https://www.ereplacementparts.com/dewalt-dw788-type-scroll-saw-parts-c-1009_2631_2632.html

sand your #45 #47 and make them rough. They seem to wear down smooth and don't hold.Make sure both meet in the middle do they are meeting the blade both sides the same

Scroll saws generally have to be loosened in two spots. One spot is above the blade near the tip of the arm. The other is generally below the plate. Most scroll saws come with a special tool that has an allen wrench type end accompanied by a round peg that is inserted just above or below the spot for the allen wrench.This peg type end helps to hold the tool in place and keeps the saw arm from moving around. The other end of the tool has a handle.
Hope this helps.

Your scroll saw should have come with Hex end tools to use when changing out the blade. You must release the tension on the blade (located on top of arm above blade). There is a small allen head screw which has to be loosened with an allen wrench to release the blade. There is also an allen head screw under the working surface which will have to be loosened to remove blade at the bottom. Replace blade at the bottom 1st, tighten up then go to the top, tighten it, then reset the tension and you're ready to saw again. Make sure to get a visual on the directions of the blade teeth before you remove it so you can replace the new one the same way. I hope this is helpful.

your delta scroll saw has two blade attachment points one under the table and one in the arm. attach under the table first and then in the arm. that way you can be sure to adjust the tension properly.

there are only two styles of scroll saw blade, those with pins and straight blades without pins

look carefully at your saw and you will be able to see which type holder you have

I would suggest calling Dremel direct at 1-800-437-3635 and asking for tech help. You might also try their website at Dremel.com, but I have been there and you need to know the exact model number. Let me know and I will dig deeper.