Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Would this sander be ok for vertical surfaces? I have some fascia boards and columns on a Crafstman home that got messed up pretty badly. (Not by me)
Document: The dust collection was flawless, collected 90% of the dust without clogging, even with 50grit sandpaper. I ran this sander 4hrs at a time, it did not overheat like the cheaper models did. The sanding was very even, no missed spots. The only bad thing I have to say about it is the weight, a benefit when sanding horizontal surfaces but at almost 10lbs, sanding the vertical posts was tough, my shoulders were pretty sore by the time i finished! I guess that is the price of having a bigger motor that delivers greater belt speed.
I hated using it so ended up selling it for $5 at a garage sale.This Makita sander is simply awesome. It's very powerful - for the most part I just guided it and didn't have to bear down at all. I was also able to fairly easily level off a few boards that were higher than adjacent ones but I had to be careful - to start with I bore down too hard and made some grooves that I had to even out. It's pretty quiet and just sounds like a quality machine, if that makes sense.
Great belt sander! I was a little worried paying the price for it considering it was about $100 more than other sanders. But it was worth it, its heavy duty for sure. I have sanded a 1,400 square foot deck and about 800 square foot of concrete that had carpet adhesive on it and i haven't had any problems at all. Dust collection on this sander is great. I have a home improvement business and have used this tool alot since I purchased it. I would recommend this tool to anybody looking for a good quality tool.
I got tired of dealing with my old Skill 18" sander. I could never keep more than half the belt on its track. The bottom plate would also collapse on one side after awhile necessitating a screw driver pry job.With the right belt the Makita is a well behaved mini-beast (loose the belt that comes with the Makita and get yourself some of the premium Norton belts...you'll be glad you did).As other's have said, this thing tracks flawlessley after a couple of adjusting turns on the side-dial.
So, I got mine and the first thing I said to myself is Amazon sent a used sander. I called Amazon and they immediately said they would send a return label and overnight me a new one. (Awesome Customer Service)  Then, while I was on hold, I looked closer. Makita ships it with a belt, and what actually happens is the belt rubs on the cardboard making the belt look worn and makes dust that is all over the tool. Before you say it Is used, look inside the dust collection unit and bag, I bet you won't find dust indicating a used tool.Awesome tool, awesome customer service!
I bought the 21" Makita 9903 Belt Sander after my old Skil 18" sander's on/off switch stopped working for the umpteenth time, and my other el-cheapo 21" belt sander was stolen (thank goodness for small favors).I've used the sander now for a month to sand down 2x6 and 4x4 rough sawn surfaces on redwood and doug fir I've used for finishing a deck (railings, fascia, stair trim). Absolutely perfect tracking all the time, no matter how hot the belt gets, no matter how much pressure I apply, no matter how long I've used the belt.
Compound this problem with the fact that the optional sanding shoe/frame is both $114 extra AND discontinued and you've got some pretty heavy cons. I made my own frame out of 3/4" MDF, but it's obviously pretty heavy and not especially durable.I also have a problem with the placement of the speed adjustment knob--it gets coated in dust almost instantly and becomes impossible to read without a shot of compressed air. I worry about how long it will last before the potentiometer fizzles out.There seem to be an awful lot of reviews of belt sanders from all manufacturers where customers complain about Amazon shipping them a used unit as new.
I have owned this sander for a few months. Bought it for remodeling work I'm doing to my house but I also have a little work shop where I make boxes and some furniture. This sander has pretty well taken up residence in one of my wood vise. I use it alot in my shop. The belts stay on track and variable speed is really nice. I have a large 6X24 belt sander but it really doesn't get any attention anymore. I would recommend one of these in place of a stationary sander as it is so versatile.
This sander replaced a crappy DeWalt that lasted for 2 seconds. And all I can say is: AWESOME!The only thing I can think of that would prevent me giving it 5 stars is that it does not come with a case.For my first project, I made the beginner error by not securing the object that was going to be sanded to the table.I thought that since the bin was pretty big and heavy it would be fine but this sander shot the potato/onion bin accross the workshop, so it does have more then enough power.After the Dewalt debacle, I will not buy anything else but Makita anymore.
Made the work twice as hard, and four times longer than it should have taken. With this Makita we did a room three time larger in record time. Wow. Talk about using the right tool for the job! I am by no means a handyman or a tool guy and I know diddly about home upgrades and repairs but this thing tracks nice, kept the sandpaper true and it just worked! Truly made the project enjoyable.I would replace this with another one if and when I have to. But so far so good.
Answer: yes