July 7, 2009

Discover the Rewards of Owning A CNC Router

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see the options available with cnc routers. sign makers can get into the commercial signage business, for example, or channel letter fabrication. it gives them a broad capability to enter multiple markets.

take a look at your options in the cnc router market and decide if the potential rewards are worth the financial investment. is using computer technology to automate control cutting, drilling and fabricating sign parts worth the investment? which table should i get? what software should i use? cnc routers bring a laundry list of advantages to a growing sign shop. productivity is always a concern in a small business and the ability to add new services, like 3-d engraving, is a potential revenue generator. greater quality and scaling capabilities, of course, are critical. add all these factors together and the result could equal greater profitability for your shop.

focusing on productivity
if you need to make several of the same item, cnc routers are a huge advantage, says marc bourque, president of larken cnc router systems, a cnc router manufacturer in ontario, canada. you can also save job files for repeat jobs.

cnc routers save labor costs, adds tom propes, sales manager for computerized cutters, inc., a cnc router and cnc channel letter fabrication manufacturer in plano, texas. it can save you time. time is money, he says. i can cut out a whole set of letters with a router in the time that it takes to cut out one by hand. you can make money but you can t make time.

expanding your services
beyond productivity, adding new services to your offering could attract new clients and a new revenue stream for your company.

gerber senior product manager scott anthony says sign makers can test their local market by first outsourcing dimensional signage to a larger company.

when you start to outsource about $700 or $800 a month then you want to think about bringing routing in-house so that you can control the product, the quality, and the profits, says anthony. dimensional signage is a strong niche that supplements existing business with higher profit potential.

taking control of in-house routing gives sign makers the capability to do both interior and exterior signage, says ken koelling, president of multicam, a cnc router manufacturer in irving, texas. sign makers can get into the commercial signage business, for example, or channel letter fabrication. it gives them a pretty broad capability to enter multiple markets.

sign making customers of techno-isel, a new hyde park, ny-based division of designatronics, tell company executive vice president george klein that there are many functions they can perform with the cnc router that they hadn t initially considered. the less obvious functions are secondary things like making frames and other things associated with the signs, including bracketry, fixtures, even things like furniture pieces and shelving applications, says klein. so a router is not only a boost to business it s an expansion of the business capabilities.

aiming for higher quality
with clients old and new, quality and consistency are critical to gaining repeat business and building your company s reputation. from this perspective, says bourque, cnc routers are the way to go. the output is high quality because you design it by hand and then depend on computer technology to cut perfect true curves.

then there s the ability to adjust the scaling at the touch of a button. you can draw something up and decide that you want it to be bigger and in a minute you ve got it bigger and ready to cut again, says bourque.

automating for profitability
while quality is key, no shop owner can resist cost-cutting strategies. using a cnc router to automate the cutting process accomplishes this goal while maintaining that ever-so-important quality and consistency.

a lot of times they are already producing components that can be produced on a router and in reality the total cost of ownership becomes less and the parts have higher quality and cost less to produce, says koelling.

now we are back to the bottom line: greater profitability. it s all in the numbers. depending on the substrate, says propes, a carved sign could run up to $150 a square foot. but the material is not nearly that expensive.

you are looking at a vinyl sign that s maybe $15 a foot versus a routed sign that s $150 a foot, he says. true, every customer is not going to choose or be able to afford the routed sign, however, if you don t offer it you ll never sell it.

choosing a router that fits your needs
just like there are different classes of cars, there are different classes of routers. but regardless of the level you choose, you should look for certain features in any machine.

start with ease of use. user-friendliness of both the software and the hardware is a key consideration.

sticking with the industry standard
gerber s routers are designed exclusively for the sign making industry. its best-selling models are the sabre series 404 and 408. the 404 model is a 4 x 4 machine with a feed rate of 600 inches per minute. the 408 model has the same capabilities with a 4 x 8 table.

gerber s anthony says custom engineering and specialized tools differentiate the sabre line from other routers on the market. priced at about $35,000 to $42,000, the sabre models are built with aluminum instead of steel to make a router that is lighter and more rigid.

we are in an industry that uses and abuses equipment and they don t spend any time taking care of their capital equipment, says anthony. we use different drives that require less maintenance and offer software, service and support systems for customers.

if you are a first time router buyer, having application assistance is important, says koelling. application assistance, not only in terms of learning the software most sign making firms are pretty savvy when it comes to graphic design and so the software isn t usually that difficult but the applications and knowledge of specific cutting techniques is real important.

avoiding downtime is a major factor, says bourque. koelling agrees, and stresses the importance of choosing a vendor that can provide service to its hardware.

choose a size that s going to fit in your space and that s going to be suitable for the type of work that you are doing or want to do, and then selecting a supplier of that machine that s going to be able to give them local service, says koelling. that s something a lot of people forget.

customers should concentrate on quality. you have to educate yourself as to what is on the market, says klein. you ve got to be careful now because there s an awful lot of companies pretending to make routers. let the buyer beware.

getting a glimpse of the market
there are lots of cnc routers out there. let s look at a select few that represent different ranges in the market. multicam is one of the leading manufacturers of cnc routers, installing more than 3,000 machines worldwide. multicam has 12 technology centers throughout the u.s. to provide local support, repair service, sales and application training. multicam routers offer a rigid, all steel construction and a robust platform for high-speed, ethernet-based cutting.

their m series is specifically designed for the needs of the sign industry. the entry-level system features the adaptation of i-cut vision systems so the machine can be easily integrated into digital printing on rigid substrates. the prices range from $30,000-$60,000 depending on the dimensions of the table.

koelling points to the design s user-friendliness as a key attraction for sign makers, an important consideration when training employees. we ve condensed the user interface to very basic functions, so it s not intimidating to learn, says koelling. that s really why they are so prolific. it s more difficult than a vinyl cutter because of the technique, but the functionality of the machine is not much more difficult.

examining all the options
larken s cnc routers are mid-level machines. the product geared toward the sign industry is called shopcam and the model has been redesigned for 2002. the latest shopcam is a turnkey 3-axis system that offers features typically found only on more expensive models. the system is based on a steel frame and gantry, welded for maximum rigidity and machined for accuracy. one new improvement is the installation of quality round star rails and star ball-bearing bushings for precision and longer life.

we went back to proven technology, says bourque. we had the basic screw before. basically, it s go all the way with the screw or don t go at all because you need to have a big, heavy duty ball screw or it s not going to work for you. if you go with the big screws you are talking about much more expensive machines.

larken s cnc routers sell for as little as $18,000 for a 4×5 table and run up to $30,000 for a 5×10 model. larken s reputation for manufacturing tables that are built to last has made the shopcam a favorite among sign makers.

assessing price versus features
next up is computerized cutters accu-cut. propes says this machine fills the gap between the $6,000 and $30,000 table. computerized cutters sells its machines direct to the consumer in sizes ranging from 4×4 to 10×25. we don t offer a lot of the whistles and bells that some of the other companies offer. however, a lot of those whistles and bells are never purchased anyway, says propes. an automatic tool changer is a good example. you can have several different bits for a job and the machine would automatically grab the bit and do that particular function. typically, those sell for $25,000. i don t know of a sign shop that i ve ever visited in 10 years that has an automatic tool changer. we don t feel it s necessary.

computerized cutters machine runs at $20,000 plus shipping. the company keeps its costs down by eliminating the controller card that takes information from the computer to the machine. the company instead took a software product designed for the engraving industry, developed it further, and uses a desktop computer to run the table. suppose i want to upgrade my operating system, says propes. i can download it over the internet. i don t have to go out and buy a $3,000 control card. you can buy a nice dell computer for $800-$900. it s very easy to use, too, instead of having an lcd screen with a lot of sub-menus, you have a 17 computer screen.

getting the biggest bang for your buck
assessing price versus features helps ensure you get the biggest bang for your buck. techno-isel is trying to further that goal with the introduction of two new cnc router models designed to address the needs of sign industry market that is demanding the ability to perform more high-end applications. techno-isel s lc (low cost) line of 4×8 routers sell for $14,000. klein says the lc model is built to the same standards as the high-end premium class router system, with all steel construction. pricing for the super heavyweight premium class machine starts at $35,000 and offers all the bells and whistles growing sign shops could hope for, with ball screw drives on all three axis to provide a high degree of accuracy, repeatability and longevity. the heavier the machine is, says klein, the more stable it is in terms of its rigidity and its capability of taking heavy cuts without flexing or bending.

making the final decision
armed with the basic facts, you can make a final decision about cnc routers for your shop. keep in mind that there are plenty of other companies with similar products at similar prices. and if it s that initial investment that is keeping you from taking the plunge, remember that most companies do have leasing programs to help you get one of these machines in your shop. monthly payments on cnc routers average about $400 the price of one or two sales.

the advantages are clear. the equipment is available. whether its worth the risk is up to you.

Ask the Expert: CNC Router Veteran Shares Practical Knowledge

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do you have questions about cnc machining? get inside the head of router expert jay higgins in this one-on-one interview.

getting the most bang for your router bucks takes a little bit of homework and a lot of practice. we cant put in the hours of practice for you, but we can provide you with advice straight from the mouth of leading industry experts.

jay higgins is one such expert. higgins came to the sign world in 1993 from the cnc manufacturing industry. with more than 20 years of cnc machining to his credit, higgins is uniquely positioned with a broad understanding of cnc tools, hardware and software. higgins is currently the general manager of capital letters in brooklen center, minn. and a respected cnc routing consultant.

signindustry.com asked jay some questions that will help you reach new heights in cnc routing.

q: in your mind, what are the biggest advantages for sign makers using routers?

a:
the biggest advantages of cncs in the sign industry are speed, accuracy and repeatability. cnc s also allow you to custom rout metal forms to help aid your fabricators in the creation of custom shaped aluminum constructed signs. this is a great advantage for modern sign companies. what was a tedious and manual chore of laying out patterns on aluminum and then jig saw cutting to get your custom shape, is now simply a matter of sending them to the cnc router to be cut.

q: what are the most common mistakes sign makers are struggling with today?

a:
the most common mistake is a lack of knowledge of basic machine principals. also, the lack of knowledge of how to properly fixture your material to the table, as well as the availability of tools you can use to get the job done.

q: would you recommend that sign makers who have never used a router seek more formal training and education beyond what the manufacturer offers?

a:
all people interested in utilizing cnc routing in sign manufacturing should take some sort of course at a nearby community college to better familiarize themselves with some basic machining skills. unfortunately, very few schools offer this kind of training. i have worked with the minnesota sign association in regard to this matter to bring it to the attention of local technical schools so that hopefully it can be a course that is offered to people in the graphics industry.

q: how about sharing some practical tips for preparation? for example, which router bits works best with which materials?

a:
tools and materials are very important things to experiment with. a good rule of thumb: always use the largest diameter tool to rout the job that is allowable, and, always use the shortest flute length for maximum rigidity.

q: what about router speeds? what speeds work best with various materials, like aluminum, high-density urethane, sign foam, etc.?

a:
speeds and feeds are directly related to the horsepower motor that you are using, as well as the type coolant system, and the coolant that is being used. a common mistake of most people is to slow down the feed rate and speed up the rpm. big mistake. generally, it will create too much heat and thus melt/weld the material.

q: which materials respond best to routing?

a:
some materials are more forgiving than others are when routing. each material has its own set up procedure and feeds and speeds as well as the proper tool to be used.

q: are there certain types of materials that sign makers should avoid when using the router?

a:
materials to avoid include those that have a great deal of glue in them, certain irons, as well as stainless steel, as there are electrical discharge concerns there.

q: what do you see in terms of upcoming trends in materials? are there new materials being designed with cnc routing in mind?

a:
i make it a point to continuously contact my suppliers and the manufactures of sign making materials to see what s being developed that can possibly be used to rout on the cnc router. i have also been selected to rout such test materials to give my evaluation of them. i don t know of too many new materials out there right now that are being developed specifically for the cnc router.

q: how can sign makers more effectively utilize digital printing in conjunction with routed sign parts? any practical tips there?

a:
using digital prints in conjunction with cnc routing is a relatively easy thing to do when they are in small formats. the problem with cnc routing a large formatvector shape to match a digital print is that the digital printer will often distort the digital print disproportionately so that it does not match up easily with the vector cut shape. allow plenty of bleed to the digital print, especially when the digital print is printed in more than one run.

q: how can sign makers more effectively match files together?

a:
file conversion and being able to recognize file extensions are very important learned skills. some filters in design programs shrink, distort, and interpret objects, text, and shapes differently. example: some .dxf files may look to have complete arcs but are really ploy lines or line segments that might not produce the outline shapes that you want.

q: what is the best method for realigning a double-sided sign on a router in order to cut out the other side?

a:
i personally like to rout double-sided signs in two pieces and them join them together back to back. this, of course, must mean that the shapes are symmetrical. if this is not an option, scoring an outline in your waste board, or building a contoured jig may be the answer. dowel pins may be another way of realigning the shapes to the table as well from side to side.

q: moving on to finishing techniques, which seems to be challenging to many sign makers coming from a vinyl background, under what circumstances should sign makers pre-paint a blank?

a:
whenever it is possible to pre-paint a blank, do it. apply your mask afterwards and rout the images as needed. this will allow you to fill in the areas you have just routed without worrying about slopping the paint all over the pre-painted areas.

q: what primers work best with various materials?

a:
i prefer to use a latex-based primer with sign foams. with aluminum, i prefer a self-etching primer. for pvcs, acrylics and foams generally do not require a primer, but roughing the surface does help the paint to take hold of the material.

q: what about work flow strategy? any practical tips there?

a:
always prepare for the next job coming down the pike. group your jobs based upon material, tools, and set up procedures.

q: can you offer any other dos and donts or practical tips in terms of driving the most creativity and profit out of the router?

a:
know what you can do with your router and inform your sales staff what you are capable of producing. nothing is more embarrassing than selling a job for the router that cannot be produced and then changing the layout or materials after the job has been sold to enable you to produce the product. always insist upon a layout before quoting a job over the phone.

q: can you offer some pricing tips?

a:
because of varying demographics, pricing should be based upon what you can produce and what your competitors can produce. every job is different, especially for the cnc router. know your materials and the speeds and feeds you can achieve and base your pricing upon that. when it comes to sign foam signs, $35 to $40 per square foot for finishing is a healthy number.

q: lots of sign makers spend their money on the machine, but then dont invest in the tools. what tools would you recommend as essentials?

a:
only buy solid carbide or carbide tipped tools. due to the coolant system found on most cnc s, high speed steel tools generally will not last as long as carbide. the proper size collet for the shank of the tool is a greatly overlooked consideration. the collet size should match the shank size of the tool. sleeving is ok, but rigidity is lost when this is done and, depending upon the material being routed, this could be a finish and quality concern.