Denon DNS-3500 Modification
If you have a set of these excellent CDJs then you’ll probably be looking wantingly at the 3700’s and their 10" of platter against your measly 7".
Well, www.extrainches.co.uk comes to the rescue.
Add 2 extra inches to your platter in seconds, for a tiny investment you can love your decks again!
Would you rather spend £700 per deck, or £15 per deck and have much more scratching surface control?
Impress the ladies with your wider & fatter platter.
I want to see a demo video.
seriously…facebook redirect.
What’s the problem with that. Facebook allows me to build loyalty, communicate, sell with ecommerce, host videos. It’s the perfect platform. Don’t diss!
I’m working on that and will let you know 
can you upload some before and after pictures… I still can’t work out what your product actually is! is it a 9" platter that you attach to the existing jog wheel? can you show a picture of it separately? (not attached to anything) or is it just a sticker/decal?
I was told size didn’t matter…
What are the long term effects of the extra weight on the DD motor? Does the extra leverage due the increased circumference take the dynamics so far out of engineering specs so as to cause damage to bearings and/or drives?
It’s a literal replacement for the platter, similar weight, same thickness, etc. Yes it overhangs, but that isn’t such a big deal for some styles of DJ’ing, and the 8" unit overhang is minimal.
The mod may really suit your style, and if so, then it will give you a 3700 size platter! Well worth a try instead of buying new units I reckon.
There are other differences of course between the 3500 and the 3700, but to me the main difference is the platter size, I’m an old school DJ and don’t use all the functionality of the units, so for that style of DJ it will be a key upgrade.
That said, it doesn’t impede any of the functionality of the units.
I’ll post video soon.
Long term effects will be nil, the extra circumference won’t make a difference to the leverage, that changes scratch by scratch anyway, whether you are moving the platter fast, slow, gently or firm… so no changes there in terms of stress on the unit, they are engineered to deal with different DJ styles and techniques, not to be operated with exactly the same force every time from every DJ, so this isn’t a measurable factor or an issue.
The weight is almost identical to the 7" perspex platter, the modification 8" or 9" platter weighs less than the 7" record with adapter option you can use on the system as standard, so the engineering tolerances are already able to take this mod.
Both good points to raise, but both answered confidently as not an issue
LOL deep down you know that’s not true 
These work on the DN-HS5500 too!
What material(s) are used in the making the platter? If the platter is larger than the original, yet “weighs less”, the material used must be a lighter material or is it the same as the original platter only machined thinner?
I’m saying in weighs less than when you use the 45 7" record as your platter. Not the original perspex one
would love to see some pictures of just the platter… might be a useful purchase for people making their own custom diy controllers… like me
Ya i could see more of a market in it being used for custom controllers than on these Denons. I dont know many people who own one and have interest in modifying it.
It’s such a simple idea that anyone with these units will just think “why not!” it’s so simple cheap and quick and has an obvious enhancement that even if your happy with the device you’ll see clearly why this makes them even better
Pics and videos will be posted on www.extrainches.co.uk go check it out, ‘like’ the Facebook page and you’ll see when they’re posted.
Thanks!
I am not sure I know anyone willing to buy anything from a facebook page.. If you want to sell these things with any chance of success, you need a real website… You can easily leverage facebook for promotional reasons, but you need a real website for anyone to take you seriously.. This isn’t me ‘hating’ on you, it’s the truth… social media should be used to promote your product to the masses, but not as your products only source of information. I for one do not have a facebook account, nor will I ever, ever sign up for one…
It allows anyone with zero knowledge of webdesign get a site up and running in no time… dirt cheap plans are available as well…
(I am in NO way affiliated with squarespace, just a fan of their service)
Well as someone who has delivered digital marketing solutions for over 15 years and owns my own digital agency, I’m probably in a reasonable position to judge the usefulness and potential role of Facebook for small niche businesses like this one as their sole public face. But thanks for the comments. I’d suggest you keep an eye on Facebook. More businesses like this will be using it as a platform and in some cases their only platform. I’m using Paypal as my method of payment and that’s quite popular too!
LOL sorry for the sarcasm, just your issue with Facebook not being a serious platform for my little business has made me chuckle.
Thanks.