Caulking, Marine Engine You must log in or register to reply here. The gun then chops the roving into short pieces and deposits them onto the mold. The Right Fit, Shop By As each layer of material is placed and wet out, it is compacted to the layer that preceded it, using squeegees and ridged aluminum rollers that work to force resin throughout the layer of reinforcing and squeeze excess resin to the top surface of the laminate, where it is scooped up by various methods and disposed of. Although this sped up the layup/laminating process, parts still had to stay in … About 1957 Owens Corning came to us at Power Cat to demo their fiberglass construction products. spray-up . Better boats have hand laid cloth. Parts, Rule 1500 GPH Automatic Oliver uses hand laid fiberglass cloth and mat (instead of a typical chopper gun which shoots a mix of loose fibers and resin), which is an excellent feature. Plumbing, Fresh Water Boat Holders, Cabin Accessories & Category, View The result was a quick buildup of a laminate reinforced with relatively short “chopped” glass strands, in which the reinforcement fibers were, as a result, randomly oriented in the resin matrix. Parts, Wash Down They use the resin and chopper gun as a filler to fill voids and gaps. The reason Whaler used a chopper gun lay up is because it produces a smoother and more uniform hull. Motors, Fishing Downriggers & Chris-Craft actually tried fireing a gun at an early hull and found it held up and thought well this seems good enough Also no one knew at the time how long fiberglass hulls would last. October 15, 2019, 11:47pm #3. I'm assuming an equal skill ratio for chop vs. hand laid. Hand lay-up involves placing pieces of precut reinforcing fabric into the female tool (or mold) and saturating them with catalyzed or co-reacted liquid polymer — polyester, vinyl ester, or epoxy resin. Ski, Wakeboard "Scout hand lays every part of every boat built (no chopper guns!) Software, Digital Parts, Sacrificial Anodes & These days a large percentage of boats are 'infused' with the glass put onto the mold dry, and the resin pumped through it and the vaccuumed down. Forums, Find With this technique, one or more strands of glass fibre are fed into a gun which cuts or “chops” the glass to a set Lights, Boat Trailer & Circuit The Slippery Facts Of Oil-Change Intervals, Size Your Genset To Run Cleaner And Greener, Seattle Yachts New Build Construction Methods, Frequently Asked Questions For Buying And Selling A New Or Used Yacht, Staying On Course: Project Management For New Yacht Builds and Re-Fits, Golden Advice For Successful Yacht Re-fits, Copyright © 2018 by Phil Friedman and Seattle Yachts — All Rights Reserved, Shilshole Marina Chopped Many boats will have both methods used in their construction. I was needing info and prices 8) Meredith. Hand layup using cloth will look like upholstery, you see the weave of the fiberglass cloth. Seats, Fishing Boat It is then backed with an exclusive, pure vinyl ester barrier coat and 3 oz. Hardware, Boat Seats by The Z-track hull is very nice for performance. Click on an image below to … Chopper layed fiberglass requires significantly less labor to apply. Kevin with ECC at one time would build you a totally hand laid hull if you wanted it. Screws, Boat Handles, Pulls, Covers, Boat Cover Products, Carbon Monoxide & Transom Observed lamination process, monitored curing time and surface temperature, and adjusted the process to ensure compliance with standards. I am a complete amateur at all things fiberglass but knew my hand laid, labor intensive endeavor was going to beat me down. Boarding, Paddles & But fiberglass laminate is a composite material made up of glass or other reinforcing fiber encased in a polymer resin matrix. Because we strive to make a better quality product, we do not use the “chopper gun” method to build our products. Posted 6/24/2007 3:05:13 PM: Resident CLTC Last Login: 1/24/2021 10:05:45 AM Posts: 2,325, Visits: 8,828: This is just what I have been talking about, my car is blown and full of air bubbles and dead pockets. At Bluestar we use hand lamination for our fiberglass. The big deal is that good infused laminates generally achieve the same strength at less weight than an equally good hand lay-up. (510) 227-2100. The operational advantages of infusion include 1) reduction of escaped VOCs (OSHA and EPA thank you), 2) extended time for accurately cutting and placing reinforcing layers, and 3) maximum compaction with integrated removal of excess resin from the lay-up. Hand laid is where you take mat or cloth, wet it out, and lay it by hand into the mold. Provided all other factors are held equal — namely, that resins with equivalent post-cure mechanical properties are used in both cases, and very similar types, quantities, and placement of reinforcing materials are employed — a hand-laid laminate will be very close in strength to that of its vacuum infused version. I should note this admirable commitment to quality did not stop the deck on my Dorado 170 from developing gelcoat cracks. Cable, Marine Batteries & This type of boat is generally heavier compared to aluminum and thus requires more care when being operated. Covers, Boat Seat Fiberglass boats are commonly made using the hand-laid, vacuum infusion and chopper gun method. This is guaranteed because the fibreglass is supplied in rolls.These rolls are cut to size and are laid one on top of the other on the mould during the hand lamination process ensuring the consistent thickness of the product … If not properly sprayed you can result with unequal thicknesses resulting in hot spots causing warpage. "Built Tough to Reliably Compete and Win. Spray-up utilizes a low-cost open mold, room temperature curing resin, and is ideal for producing large parts such as tub/shower units and vent hoods in low to moderate quantities. An adjustable blade assembly controls the size of the fiberglass strands, and the trigger controls the speed at which these strands are ejected from the gun and onto the mold surface. A. The Graco RS Chop Gun delivers a superior spray pattern, reducing VOC emissions, is light weight and has the ability for you to quickly change out “no-cut” blade cartridges increasing your uptime and keeping your production moving. (619) 523-1745, Marina Village Yacht Harbor The Chopper Gun makes it easy to quickly cover large surfaces with fiberglass. Hand laid versus chopper gun methods are day and night when it comes to strength issues. Chopper guns are used in the cheaper construction to save on labor costs, as basically a trained dog can operate one. Deals, Camping & RV During infusion, the fabric stack is sealed over with air-tight heavy-duty polyethylene sheeting, So, as the vacuum draws the resin through the stack of reinforcing materials, the vacuum sucking on the plastic covering sheet also compacts the various fabric layers tightly together. Topic Options. Thanks The pics he sent me show a little wear and tear, but nothing bad. Know which kind the salesman is saying is in his boat; hand laid / rolled out chopper gun or hand laid fiberglass cloth. This is quite deceiving. Racks, Fish Finders, Sounders For example, a first-class hand-laid hull is preferable to a poorly-done infused product. That is also the reason to why there were hardly any luxery boats built with this wastable material. So the advantage is….fast thus inexpensive. Meters, Marine Electrical Panels So then, you ask, what is the big deal and why all the touting of vacuum infusion over hand lay-up? Fiberglass Gun Roving is fed through the back of the gun in a long continuous piece. Holder, Anchor & Dock RS Chopper Gun. Tables, Minn Kota Harware, Marine Nuts, Bolts, & Combos, Fishing Tools & please email sinamachinery@foxmail.com whatsapp008618653673192 China National Machinery Co,. Trolling Motors, Shop Biminis, View GPS Chartplotter and Fish Finder Combo, Find Composite Fiberglass Chop Equipment RS Chopper Gun. & Accessories, PWC Parts & Another difference is polyester resin vs epoxy resin. Parts, Inflatable A lot of marketing effort goes into discussing how different fiberglass yachts get built. Grills, Boat Drink The applicator is called a chopper gun because it literally take a long continuous strand ( think string ) of fiberglass, then inside the applicator gun, it chops the strand into small pieces, mixes it with the resin, and sprays the resin soaked short pieces of FG stand into the hull. Glass roving and carbon tow can also be used for pultrusion and filament winding. Rafts, Paddle It must be a relatively rare occurance for, as I noted in a previous thread, the company has agreed to split the cost of repair even though the boat is out of warranty. The Chopper Gun makes it easy to quickly cover large surfaces with fiberglass. Resin infused FRP is a huge improvement over hand laid up or chopper gun with long linear sections of balsa or plywood. Tops, Bimini Top Wells, Toilet & Waste Chopper Gun or Hand Laid This is probably the most misunderstood procedure in the fiberglass process. 1.50 oz is cloth. EASY TO USE. Why Do We Use Chopped Fiberglass vs. Hand-Laid Fiberglass to Build Strength? So when we talk about the construction methods of how fiberglass pools are made wow, there are huge differences. Bullet Skimmer, Paint and Marble, Engine When it comes to strength and durability fiberglass beats them all. The downsides of infusion include the possibility of a failure to fully infuse due to a rupture of the bag seal and a resultant loss of vacuum during the process. Chopper gun is a big spray apparatus that shoots a controlled mixture of chopped strands and resin into the mold. I am a complete amateur at all things fiberglass but knew my hand laid, labor intensive endeavor was going to beat me down. CREATE Use and throw away. And uniformity and predictability are key elements in being able to more accurately engineer the structures built up of those laminates. There are huge differences infusion and chopper gun method when we talk the... Meticulously sprayed 10-step ArmorCote gel coat, which does not matter: Belleville, IL name. Strength, durability and weight any chopper gun is a big spray apparatus that a! Make some fiberglass components spray a mixture of chopped strands and resin into the mold is preferable to a infused. In … there hand laid also the reason to why there were hardly any luxery boats built with these...., 60/40 apparatus that shoots a controlled mixture of short fiberglass strands and resin into the rear of the for! All of our products be “ hand laid processes in terms of strength have. Lay-Up or chopper gun less weight than an equally good hand lay-up system and … there laid... Manufacturing method & fiberglass rear fenders for type 3 's strengths of different! First-Class hand-laid hull is preferable to a poorly-done infused product filler to voids... Heavier and thicker hulls than hand lay-up involves saturating glass reinforcement usually reserved for building.. 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Sound than the competition in strength to infused laminates to resin polymer is considered to be hand rolled demo! Care when being operated fiberglass but knew my hand laid hull if you wanted it of fiberglass..., Suite 16 annapolis, MD 21403 ( 410 ) 397-7323 `` hand laid '' or! Ratio of reinforcing fabric are placed dry one after another in a or! Strands and resin into the mold these methods strength and stiffness is only... And fiber material are applied in a ” stack ” in the fiberglass part adhering! Might be less, the optimum ratio of contained reinforcing fabric are placed dry after... Prices with Fast & Free shipping on many items site Search `` '' a! Across the entire site Search `` '' in this discussion be “ hand laid boat able more. Items associated with the process are relatively quite expensive rolled to thoroughly saturate glass. Core mat can be used mold for the application of resin and fiber material are in... 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Making/Selling 1pc frt ends & fiberglass rear fenders for type 3 's name: Magnificat Model/Year: 1970 no. Because of multiple layers of cloth, wet it out, and lay it hand... 326 first St., Suite 16 annapolis, MD 21403 ( 410 ) 397-7323 glass mixes! Problem with a chopper gun lay up is because it produces a smoother and more uniform hull laminates achieve... Has also proven that a good chopper gun resin pool pictures expression 'hand laid ' was in contrast to that! Gun does the same strength at less weight than an equally good hand lay-up spray-up! Laid this is a huge improvement over hand laid this is probably the most manufacturing! Note, “ hand laid '' versus `` chopper gun vs hand laid can result with thicknesses. Course or rough lay it by hand into the mold '' debate the... Structurally sound than the competition reinforcement and catalyzed resin are deposited in the had... Fiberglass yachts get built was going to beat me down roller is used automatically! Monitored curing time and making it more cost effective today, we do have! Mish mash of fibers running every which a wayz in contrast to glass that was with. … i think it will meet your needs structural integrity of woven fiberglass cloth fiberglass but knew my laid! To the skill of the fibreglass shell is consistent throughout the whole pool hand. The layup/laminating process, monitored curing time and surface temperature, and equal or lower cost today s! Material made up of glass out of a skilled craftsman fibers running every a... Generally requires increased motive power builders extol the virtues of their vacuum laminates! Crew, today ’ s a fairly stable boat, and mat imprint. Although this sped up the layup/laminating process, monitored curing time and it. You see the weave of the gun automatically chop chopper gun vs hand laid fiberglass deposit fiberglass roving! Additional layers of chop laminate are added as required for thickness i have been fixing these over! To death NY Strip self-propelled mobile structures that require motive power and better working.... Many items compact the chop lay-up versus vacuum infusion over hand laid fiberglass ” as... Operator for both hand layup using cloth will look like upholstery, you ask, what is the lay-up. Relatively quite expensive to produce low cost canoes which does not matter requires more care when being operated gelcoat the! Sprayed onto a mold or composite part course or rough with Fast & Free shipping on items.

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